How to force Ubuntu to detect external display?
My laptop recognises external display devices if I connect them before booting the system, but many times it doesn't if I connect while the system is running. In this case, rebooting naturally solves the problem.
Is there a way to force Ubuntu to detect external displays? Opening up the display menu and pressing "Detect displays" does nothing.
display
add a comment |
My laptop recognises external display devices if I connect them before booting the system, but many times it doesn't if I connect while the system is running. In this case, rebooting naturally solves the problem.
Is there a way to force Ubuntu to detect external displays? Opening up the display menu and pressing "Detect displays" does nothing.
display
1
Video card and driver in use?
– dadexix86
Dec 8 '15 at 17:19
Fromlshw -c video
: it's Haswell-ULT Integrated Graphics Controller and the driver is i915.
– aasitus
Dec 8 '15 at 17:53
Try logging out, going to a VC (ctrl-alt-F1) and restarting X (askubuntu.com/a/79587/16395). Sometime it works. Without logging out --- I never managed it.
– Rmano
Dec 8 '15 at 21:13
Thanks. I was hoping there'd be a way to do that without logging out.
– aasitus
Dec 10 '15 at 19:41
add a comment |
My laptop recognises external display devices if I connect them before booting the system, but many times it doesn't if I connect while the system is running. In this case, rebooting naturally solves the problem.
Is there a way to force Ubuntu to detect external displays? Opening up the display menu and pressing "Detect displays" does nothing.
display
My laptop recognises external display devices if I connect them before booting the system, but many times it doesn't if I connect while the system is running. In this case, rebooting naturally solves the problem.
Is there a way to force Ubuntu to detect external displays? Opening up the display menu and pressing "Detect displays" does nothing.
display
display
asked Dec 8 '15 at 17:17
aasitusaasitus
76113
76113
1
Video card and driver in use?
– dadexix86
Dec 8 '15 at 17:19
Fromlshw -c video
: it's Haswell-ULT Integrated Graphics Controller and the driver is i915.
– aasitus
Dec 8 '15 at 17:53
Try logging out, going to a VC (ctrl-alt-F1) and restarting X (askubuntu.com/a/79587/16395). Sometime it works. Without logging out --- I never managed it.
– Rmano
Dec 8 '15 at 21:13
Thanks. I was hoping there'd be a way to do that without logging out.
– aasitus
Dec 10 '15 at 19:41
add a comment |
1
Video card and driver in use?
– dadexix86
Dec 8 '15 at 17:19
Fromlshw -c video
: it's Haswell-ULT Integrated Graphics Controller and the driver is i915.
– aasitus
Dec 8 '15 at 17:53
Try logging out, going to a VC (ctrl-alt-F1) and restarting X (askubuntu.com/a/79587/16395). Sometime it works. Without logging out --- I never managed it.
– Rmano
Dec 8 '15 at 21:13
Thanks. I was hoping there'd be a way to do that without logging out.
– aasitus
Dec 10 '15 at 19:41
1
1
Video card and driver in use?
– dadexix86
Dec 8 '15 at 17:19
Video card and driver in use?
– dadexix86
Dec 8 '15 at 17:19
From
lshw -c video
: it's Haswell-ULT Integrated Graphics Controller and the driver is i915.– aasitus
Dec 8 '15 at 17:53
From
lshw -c video
: it's Haswell-ULT Integrated Graphics Controller and the driver is i915.– aasitus
Dec 8 '15 at 17:53
Try logging out, going to a VC (ctrl-alt-F1) and restarting X (askubuntu.com/a/79587/16395). Sometime it works. Without logging out --- I never managed it.
– Rmano
Dec 8 '15 at 21:13
Try logging out, going to a VC (ctrl-alt-F1) and restarting X (askubuntu.com/a/79587/16395). Sometime it works. Without logging out --- I never managed it.
– Rmano
Dec 8 '15 at 21:13
Thanks. I was hoping there'd be a way to do that without logging out.
– aasitus
Dec 10 '15 at 19:41
Thanks. I was hoping there'd be a way to do that without logging out.
– aasitus
Dec 10 '15 at 19:41
add a comment |
4 Answers
4
active
oldest
votes
Actually, you don't need to log out. Simply going to a VC with ctrl-alt-f1 and going back to your graphical interface (ctrl-alt-f7) solves the problem for me.
This way, you don't lose all your windows...
1
This seems like it would work, since restarting my laptop works, but it doesn't.
– TankorSmash
Mar 3 '17 at 20:14
This trick perfectly solved my problem => a case of replacing the current monitor with a new one while Ubuntu 16.04 LTE is running without reboot/logout. I just had to press Ctrl + Alt + F1 while my old monitor is connected, disconnect it and connect my new monitor, press Ctrl + Alt + F7 and it worked instantly! Thank you so much!
– Jim C
Apr 19 '17 at 2:35
Nice! before this I was kind of frustrated with 17.10. For me actually just doing Ctrl+Alt+F1 and logging back in is sufficient.
– Jarno
Feb 26 '18 at 17:59
I'm also with 17.10, with Gnome replacing Unity. And to get back I usedCtrl+Alt+F2
, instead ofF7
– Ilia Barahovski
Apr 9 '18 at 10:19
3
In Ubuntu 18.04, it seems the default default graphical interface is F1. So I do Ctrl+Alt+F2, then Ctrl+Alt+F1.
– David Oliver
May 12 '18 at 13:20
|
show 1 more comment
To enable all outputs in their default mode, run:
$ xrandr --auto
For more information, see:
https://xorg-team.pages.debian.net/xorg/howto/use-xrandr.html
xrandr
says the display is disconnected, but it works fine in Windows.
– Aaron Franke
Dec 9 '18 at 7:49
add a comment |
I just encountered this issue with my Dell Latitude E5550 using a port extender and two external monitors.
My problems began when I had a power failure. For silly reasons, I could only plug in one of my two monitors, so I opened up the screen display interface and de-activated the screen that didn't have power.
Awesome!
Once the power came back on the process to turn my screen back on was unintuitive. I couldn't see it in the screen display interface even after rebooting or redocking my laptop.
So I tried $ xrandr --auto
and got Ubuntu to extend to "one" screen but duplicate to both of my externals (they are two of the same model). Amusing but not useful.
It was only when I clicked on "1 Built-in display" like in the screenshot below that I was able to select my "3rd" screen and turn it on again.
The Screen Display Interface
Doing this flipped the two screens around for some reason and I had to rearrange them but that was easily fixed!
lshw -c video
doesn't list monitors it lists your drivers.
– hugo der hungrige
Mar 11 at 10:14
1
You're absolutely right! I will edit my answer.
– Cerberton
Mar 12 at 11:04
add a comment |
If the external monitor can't be detected by using xrandr --auto
, or even by booting to different OS, reboot Ubuntu using a previous kernel. If the computer detects the monitor in the older kernel, you can go back to the latest one without any problems.
I don't know the exact reason why it works, but it definitely worked for me.
xrandr --auto closed my current GUI sessionn ! But afterwards I could use all 3 Displays: Build in Laptop and two external Display. Displays are connected via USB / DisplayLink
– Thorsten Niehues
Oct 10 '18 at 8:27
add a comment |
Your Answer
StackExchange.ready(function() {
var channelOptions = {
tags: "".split(" "),
id: "89"
};
initTagRenderer("".split(" "), "".split(" "), channelOptions);
StackExchange.using("externalEditor", function() {
// Have to fire editor after snippets, if snippets enabled
if (StackExchange.settings.snippets.snippetsEnabled) {
StackExchange.using("snippets", function() {
createEditor();
});
}
else {
createEditor();
}
});
function createEditor() {
StackExchange.prepareEditor({
heartbeatType: 'answer',
autoActivateHeartbeat: false,
convertImagesToLinks: true,
noModals: true,
showLowRepImageUploadWarning: true,
reputationToPostImages: 10,
bindNavPrevention: true,
postfix: "",
imageUploader: {
brandingHtml: "Powered by u003ca class="icon-imgur-white" href="https://imgur.com/"u003eu003c/au003e",
contentPolicyHtml: "User contributions licensed under u003ca href="https://creativecommons.org/licenses/by-sa/3.0/"u003ecc by-sa 3.0 with attribution requiredu003c/au003e u003ca href="https://stackoverflow.com/legal/content-policy"u003e(content policy)u003c/au003e",
allowUrls: true
},
onDemand: true,
discardSelector: ".discard-answer"
,immediatelyShowMarkdownHelp:true
});
}
});
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
StackExchange.ready(
function () {
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2faskubuntu.com%2fquestions%2f707422%2fhow-to-force-ubuntu-to-detect-external-display%23new-answer', 'question_page');
}
);
Post as a guest
Required, but never shown
4 Answers
4
active
oldest
votes
4 Answers
4
active
oldest
votes
active
oldest
votes
active
oldest
votes
Actually, you don't need to log out. Simply going to a VC with ctrl-alt-f1 and going back to your graphical interface (ctrl-alt-f7) solves the problem for me.
This way, you don't lose all your windows...
1
This seems like it would work, since restarting my laptop works, but it doesn't.
– TankorSmash
Mar 3 '17 at 20:14
This trick perfectly solved my problem => a case of replacing the current monitor with a new one while Ubuntu 16.04 LTE is running without reboot/logout. I just had to press Ctrl + Alt + F1 while my old monitor is connected, disconnect it and connect my new monitor, press Ctrl + Alt + F7 and it worked instantly! Thank you so much!
– Jim C
Apr 19 '17 at 2:35
Nice! before this I was kind of frustrated with 17.10. For me actually just doing Ctrl+Alt+F1 and logging back in is sufficient.
– Jarno
Feb 26 '18 at 17:59
I'm also with 17.10, with Gnome replacing Unity. And to get back I usedCtrl+Alt+F2
, instead ofF7
– Ilia Barahovski
Apr 9 '18 at 10:19
3
In Ubuntu 18.04, it seems the default default graphical interface is F1. So I do Ctrl+Alt+F2, then Ctrl+Alt+F1.
– David Oliver
May 12 '18 at 13:20
|
show 1 more comment
Actually, you don't need to log out. Simply going to a VC with ctrl-alt-f1 and going back to your graphical interface (ctrl-alt-f7) solves the problem for me.
This way, you don't lose all your windows...
1
This seems like it would work, since restarting my laptop works, but it doesn't.
– TankorSmash
Mar 3 '17 at 20:14
This trick perfectly solved my problem => a case of replacing the current monitor with a new one while Ubuntu 16.04 LTE is running without reboot/logout. I just had to press Ctrl + Alt + F1 while my old monitor is connected, disconnect it and connect my new monitor, press Ctrl + Alt + F7 and it worked instantly! Thank you so much!
– Jim C
Apr 19 '17 at 2:35
Nice! before this I was kind of frustrated with 17.10. For me actually just doing Ctrl+Alt+F1 and logging back in is sufficient.
– Jarno
Feb 26 '18 at 17:59
I'm also with 17.10, with Gnome replacing Unity. And to get back I usedCtrl+Alt+F2
, instead ofF7
– Ilia Barahovski
Apr 9 '18 at 10:19
3
In Ubuntu 18.04, it seems the default default graphical interface is F1. So I do Ctrl+Alt+F2, then Ctrl+Alt+F1.
– David Oliver
May 12 '18 at 13:20
|
show 1 more comment
Actually, you don't need to log out. Simply going to a VC with ctrl-alt-f1 and going back to your graphical interface (ctrl-alt-f7) solves the problem for me.
This way, you don't lose all your windows...
Actually, you don't need to log out. Simply going to a VC with ctrl-alt-f1 and going back to your graphical interface (ctrl-alt-f7) solves the problem for me.
This way, you don't lose all your windows...
answered Jan 2 '17 at 10:11
TomôTomô
15113
15113
1
This seems like it would work, since restarting my laptop works, but it doesn't.
– TankorSmash
Mar 3 '17 at 20:14
This trick perfectly solved my problem => a case of replacing the current monitor with a new one while Ubuntu 16.04 LTE is running without reboot/logout. I just had to press Ctrl + Alt + F1 while my old monitor is connected, disconnect it and connect my new monitor, press Ctrl + Alt + F7 and it worked instantly! Thank you so much!
– Jim C
Apr 19 '17 at 2:35
Nice! before this I was kind of frustrated with 17.10. For me actually just doing Ctrl+Alt+F1 and logging back in is sufficient.
– Jarno
Feb 26 '18 at 17:59
I'm also with 17.10, with Gnome replacing Unity. And to get back I usedCtrl+Alt+F2
, instead ofF7
– Ilia Barahovski
Apr 9 '18 at 10:19
3
In Ubuntu 18.04, it seems the default default graphical interface is F1. So I do Ctrl+Alt+F2, then Ctrl+Alt+F1.
– David Oliver
May 12 '18 at 13:20
|
show 1 more comment
1
This seems like it would work, since restarting my laptop works, but it doesn't.
– TankorSmash
Mar 3 '17 at 20:14
This trick perfectly solved my problem => a case of replacing the current monitor with a new one while Ubuntu 16.04 LTE is running without reboot/logout. I just had to press Ctrl + Alt + F1 while my old monitor is connected, disconnect it and connect my new monitor, press Ctrl + Alt + F7 and it worked instantly! Thank you so much!
– Jim C
Apr 19 '17 at 2:35
Nice! before this I was kind of frustrated with 17.10. For me actually just doing Ctrl+Alt+F1 and logging back in is sufficient.
– Jarno
Feb 26 '18 at 17:59
I'm also with 17.10, with Gnome replacing Unity. And to get back I usedCtrl+Alt+F2
, instead ofF7
– Ilia Barahovski
Apr 9 '18 at 10:19
3
In Ubuntu 18.04, it seems the default default graphical interface is F1. So I do Ctrl+Alt+F2, then Ctrl+Alt+F1.
– David Oliver
May 12 '18 at 13:20
1
1
This seems like it would work, since restarting my laptop works, but it doesn't.
– TankorSmash
Mar 3 '17 at 20:14
This seems like it would work, since restarting my laptop works, but it doesn't.
– TankorSmash
Mar 3 '17 at 20:14
This trick perfectly solved my problem => a case of replacing the current monitor with a new one while Ubuntu 16.04 LTE is running without reboot/logout. I just had to press Ctrl + Alt + F1 while my old monitor is connected, disconnect it and connect my new monitor, press Ctrl + Alt + F7 and it worked instantly! Thank you so much!
– Jim C
Apr 19 '17 at 2:35
This trick perfectly solved my problem => a case of replacing the current monitor with a new one while Ubuntu 16.04 LTE is running without reboot/logout. I just had to press Ctrl + Alt + F1 while my old monitor is connected, disconnect it and connect my new monitor, press Ctrl + Alt + F7 and it worked instantly! Thank you so much!
– Jim C
Apr 19 '17 at 2:35
Nice! before this I was kind of frustrated with 17.10. For me actually just doing Ctrl+Alt+F1 and logging back in is sufficient.
– Jarno
Feb 26 '18 at 17:59
Nice! before this I was kind of frustrated with 17.10. For me actually just doing Ctrl+Alt+F1 and logging back in is sufficient.
– Jarno
Feb 26 '18 at 17:59
I'm also with 17.10, with Gnome replacing Unity. And to get back I used
Ctrl+Alt+F2
, instead of F7
– Ilia Barahovski
Apr 9 '18 at 10:19
I'm also with 17.10, with Gnome replacing Unity. And to get back I used
Ctrl+Alt+F2
, instead of F7
– Ilia Barahovski
Apr 9 '18 at 10:19
3
3
In Ubuntu 18.04, it seems the default default graphical interface is F1. So I do Ctrl+Alt+F2, then Ctrl+Alt+F1.
– David Oliver
May 12 '18 at 13:20
In Ubuntu 18.04, it seems the default default graphical interface is F1. So I do Ctrl+Alt+F2, then Ctrl+Alt+F1.
– David Oliver
May 12 '18 at 13:20
|
show 1 more comment
To enable all outputs in their default mode, run:
$ xrandr --auto
For more information, see:
https://xorg-team.pages.debian.net/xorg/howto/use-xrandr.html
xrandr
says the display is disconnected, but it works fine in Windows.
– Aaron Franke
Dec 9 '18 at 7:49
add a comment |
To enable all outputs in their default mode, run:
$ xrandr --auto
For more information, see:
https://xorg-team.pages.debian.net/xorg/howto/use-xrandr.html
xrandr
says the display is disconnected, but it works fine in Windows.
– Aaron Franke
Dec 9 '18 at 7:49
add a comment |
To enable all outputs in their default mode, run:
$ xrandr --auto
For more information, see:
https://xorg-team.pages.debian.net/xorg/howto/use-xrandr.html
To enable all outputs in their default mode, run:
$ xrandr --auto
For more information, see:
https://xorg-team.pages.debian.net/xorg/howto/use-xrandr.html
edited Jul 19 '18 at 17:51
Amanda
4,340104285
4,340104285
answered Jan 28 '18 at 10:35
Gayan WeerakuttiGayan Weerakutti
1,9241428
1,9241428
xrandr
says the display is disconnected, but it works fine in Windows.
– Aaron Franke
Dec 9 '18 at 7:49
add a comment |
xrandr
says the display is disconnected, but it works fine in Windows.
– Aaron Franke
Dec 9 '18 at 7:49
xrandr
says the display is disconnected, but it works fine in Windows.– Aaron Franke
Dec 9 '18 at 7:49
xrandr
says the display is disconnected, but it works fine in Windows.– Aaron Franke
Dec 9 '18 at 7:49
add a comment |
I just encountered this issue with my Dell Latitude E5550 using a port extender and two external monitors.
My problems began when I had a power failure. For silly reasons, I could only plug in one of my two monitors, so I opened up the screen display interface and de-activated the screen that didn't have power.
Awesome!
Once the power came back on the process to turn my screen back on was unintuitive. I couldn't see it in the screen display interface even after rebooting or redocking my laptop.
So I tried $ xrandr --auto
and got Ubuntu to extend to "one" screen but duplicate to both of my externals (they are two of the same model). Amusing but not useful.
It was only when I clicked on "1 Built-in display" like in the screenshot below that I was able to select my "3rd" screen and turn it on again.
The Screen Display Interface
Doing this flipped the two screens around for some reason and I had to rearrange them but that was easily fixed!
lshw -c video
doesn't list monitors it lists your drivers.
– hugo der hungrige
Mar 11 at 10:14
1
You're absolutely right! I will edit my answer.
– Cerberton
Mar 12 at 11:04
add a comment |
I just encountered this issue with my Dell Latitude E5550 using a port extender and two external monitors.
My problems began when I had a power failure. For silly reasons, I could only plug in one of my two monitors, so I opened up the screen display interface and de-activated the screen that didn't have power.
Awesome!
Once the power came back on the process to turn my screen back on was unintuitive. I couldn't see it in the screen display interface even after rebooting or redocking my laptop.
So I tried $ xrandr --auto
and got Ubuntu to extend to "one" screen but duplicate to both of my externals (they are two of the same model). Amusing but not useful.
It was only when I clicked on "1 Built-in display" like in the screenshot below that I was able to select my "3rd" screen and turn it on again.
The Screen Display Interface
Doing this flipped the two screens around for some reason and I had to rearrange them but that was easily fixed!
lshw -c video
doesn't list monitors it lists your drivers.
– hugo der hungrige
Mar 11 at 10:14
1
You're absolutely right! I will edit my answer.
– Cerberton
Mar 12 at 11:04
add a comment |
I just encountered this issue with my Dell Latitude E5550 using a port extender and two external monitors.
My problems began when I had a power failure. For silly reasons, I could only plug in one of my two monitors, so I opened up the screen display interface and de-activated the screen that didn't have power.
Awesome!
Once the power came back on the process to turn my screen back on was unintuitive. I couldn't see it in the screen display interface even after rebooting or redocking my laptop.
So I tried $ xrandr --auto
and got Ubuntu to extend to "one" screen but duplicate to both of my externals (they are two of the same model). Amusing but not useful.
It was only when I clicked on "1 Built-in display" like in the screenshot below that I was able to select my "3rd" screen and turn it on again.
The Screen Display Interface
Doing this flipped the two screens around for some reason and I had to rearrange them but that was easily fixed!
I just encountered this issue with my Dell Latitude E5550 using a port extender and two external monitors.
My problems began when I had a power failure. For silly reasons, I could only plug in one of my two monitors, so I opened up the screen display interface and de-activated the screen that didn't have power.
Awesome!
Once the power came back on the process to turn my screen back on was unintuitive. I couldn't see it in the screen display interface even after rebooting or redocking my laptop.
So I tried $ xrandr --auto
and got Ubuntu to extend to "one" screen but duplicate to both of my externals (they are two of the same model). Amusing but not useful.
It was only when I clicked on "1 Built-in display" like in the screenshot below that I was able to select my "3rd" screen and turn it on again.
The Screen Display Interface
Doing this flipped the two screens around for some reason and I had to rearrange them but that was easily fixed!
edited Mar 12 at 11:06
answered Oct 8 '18 at 13:58
CerbertonCerberton
114
114
lshw -c video
doesn't list monitors it lists your drivers.
– hugo der hungrige
Mar 11 at 10:14
1
You're absolutely right! I will edit my answer.
– Cerberton
Mar 12 at 11:04
add a comment |
lshw -c video
doesn't list monitors it lists your drivers.
– hugo der hungrige
Mar 11 at 10:14
1
You're absolutely right! I will edit my answer.
– Cerberton
Mar 12 at 11:04
lshw -c video
doesn't list monitors it lists your drivers.– hugo der hungrige
Mar 11 at 10:14
lshw -c video
doesn't list monitors it lists your drivers.– hugo der hungrige
Mar 11 at 10:14
1
1
You're absolutely right! I will edit my answer.
– Cerberton
Mar 12 at 11:04
You're absolutely right! I will edit my answer.
– Cerberton
Mar 12 at 11:04
add a comment |
If the external monitor can't be detected by using xrandr --auto
, or even by booting to different OS, reboot Ubuntu using a previous kernel. If the computer detects the monitor in the older kernel, you can go back to the latest one without any problems.
I don't know the exact reason why it works, but it definitely worked for me.
xrandr --auto closed my current GUI sessionn ! But afterwards I could use all 3 Displays: Build in Laptop and two external Display. Displays are connected via USB / DisplayLink
– Thorsten Niehues
Oct 10 '18 at 8:27
add a comment |
If the external monitor can't be detected by using xrandr --auto
, or even by booting to different OS, reboot Ubuntu using a previous kernel. If the computer detects the monitor in the older kernel, you can go back to the latest one without any problems.
I don't know the exact reason why it works, but it definitely worked for me.
xrandr --auto closed my current GUI sessionn ! But afterwards I could use all 3 Displays: Build in Laptop and two external Display. Displays are connected via USB / DisplayLink
– Thorsten Niehues
Oct 10 '18 at 8:27
add a comment |
If the external monitor can't be detected by using xrandr --auto
, or even by booting to different OS, reboot Ubuntu using a previous kernel. If the computer detects the monitor in the older kernel, you can go back to the latest one without any problems.
I don't know the exact reason why it works, but it definitely worked for me.
If the external monitor can't be detected by using xrandr --auto
, or even by booting to different OS, reboot Ubuntu using a previous kernel. If the computer detects the monitor in the older kernel, you can go back to the latest one without any problems.
I don't know the exact reason why it works, but it definitely worked for me.
answered Sep 8 '18 at 11:59
Murilo Teixeira SilvaMurilo Teixeira Silva
1
1
xrandr --auto closed my current GUI sessionn ! But afterwards I could use all 3 Displays: Build in Laptop and two external Display. Displays are connected via USB / DisplayLink
– Thorsten Niehues
Oct 10 '18 at 8:27
add a comment |
xrandr --auto closed my current GUI sessionn ! But afterwards I could use all 3 Displays: Build in Laptop and two external Display. Displays are connected via USB / DisplayLink
– Thorsten Niehues
Oct 10 '18 at 8:27
xrandr --auto closed my current GUI sessionn ! But afterwards I could use all 3 Displays: Build in Laptop and two external Display. Displays are connected via USB / DisplayLink
– Thorsten Niehues
Oct 10 '18 at 8:27
xrandr --auto closed my current GUI sessionn ! But afterwards I could use all 3 Displays: Build in Laptop and two external Display. Displays are connected via USB / DisplayLink
– Thorsten Niehues
Oct 10 '18 at 8:27
add a comment |
Thanks for contributing an answer to Ask Ubuntu!
- Please be sure to answer the question. Provide details and share your research!
But avoid …
- Asking for help, clarification, or responding to other answers.
- Making statements based on opinion; back them up with references or personal experience.
To learn more, see our tips on writing great answers.
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
StackExchange.ready(
function () {
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2faskubuntu.com%2fquestions%2f707422%2fhow-to-force-ubuntu-to-detect-external-display%23new-answer', 'question_page');
}
);
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
1
Video card and driver in use?
– dadexix86
Dec 8 '15 at 17:19
From
lshw -c video
: it's Haswell-ULT Integrated Graphics Controller and the driver is i915.– aasitus
Dec 8 '15 at 17:53
Try logging out, going to a VC (ctrl-alt-F1) and restarting X (askubuntu.com/a/79587/16395). Sometime it works. Without logging out --- I never managed it.
– Rmano
Dec 8 '15 at 21:13
Thanks. I was hoping there'd be a way to do that without logging out.
– aasitus
Dec 10 '15 at 19:41