Ubuntu 18.04 screen lock loses highest resolution each time
I'm on Ubuntu 18.04 desktop, with Intel HD Integrated Graphics and a single 2560x1440 screen connected with a DP (DisplayPort) cable. I've not had this problem using the same desktop with smaller monitors.
On this large monitor, each time I resume from locking the screen (entering my password for the system's only user account), the highest available resolution is progressively eliminated from the list of choices in both GNOME Settings and the options displayed by xrandr. Initially, after the system boot:
$ xrandr
Screen 0: minimum 320 x 200, current 2560 x 1440, maximum 8192 x 8192
VGA-1 disconnected (normal left inverted right x axis y axis)
HDMI-1 disconnected (normal left inverted right x axis y axis)
DP-1 connected primary 2560x1440+0+0 (normal left inverted right x axis y axis) 699mm x 393mm
2560x1440 59.95*+
2880x1620 60.00
2048x1152 60.00
1920x1200 59.88
... then after the first screen lock & resume, a higher than natural resolution is eliminated (through having no visible effect yet):
Screen 0: minimum 320 x 200, current 2560 x 1440, maximum 8192 x 8192 ...
2560x1440 59.95*+
2048x1152 60.00
1920x1200 59.88
... then the second screen lock & resume reduces the current resolution to 2048x1152:
Screen 0: minimum 320 x 200, current 2048 x 1152, maximum 8192 x 8192 ...
DP-1 connected primary 2048x1152+0+0 (normal left inverted right x axis y axis) 699mm x 393mm
2048x1152 60.00*
1920x1200 59.88
... and the third reduces the screen to 1920x1200, going further down the list each time: progressively eliminating the highest pair of available screen resolution & video frequency with each screen lock.
The monitor is an Acer EB321HQU - turning it off & on again has no effect on the resolutions available unless the system is also rebooted. There are related bug reports but only confirmed for nVidia graphics cards, not applicable in my case. I've also tried these so far, with no effect on the problem:
- switching from default
gdm3tolightdm
- upgrading video driver
xserver-xorg-video-intel/bionicfrom native2:2.99.917+git20171229-1to newer version at Open Graphics Drivers PPA2:2.99.917+git1903011933.6afed3~oibaf~b amd64
EDIT: disconnecting & reconnecting the DP cable reduces the maximum resolution even further, to 1024x768.
18.04 xorg screen display-resolution lock-screen
asked Mar 17 at 14:45
rphairrphair
387
add a comment |
I'm on Ubuntu 18.04 desktop, with Intel HD Integrated Graphics and a single 2560x1440 screen connected with a DP (DisplayPort) cable. I've not had this problem using the same desktop with smaller monitors.
On this large monitor, each time I resume from locking the screen (entering my password for the system's only user account), the highest available resolution is progressively eliminated from the list of choices in both GNOME Settings and the options displayed by xrandr. Initially, after the system boot:
$ xrandr
Screen 0: minimum 320 x 200, current 2560 x 1440, maximum 8192 x 8192
VGA-1 disconnected (normal left inverted right x axis y axis)
HDMI-1 disconnected (normal left inverted right x axis y axis)
DP-1 connected primary 2560x1440+0+0 (normal left inverted right x axis y axis) 699mm x 393mm
2560x1440 59.95*+
2880x1620 60.00
2048x1152 60.00
1920x1200 59.88
... then after the first screen lock & resume, a higher than natural resolution is eliminated (through having no visible effect yet):
Screen 0: minimum 320 x 200, current 2560 x 1440, maximum 8192 x 8192 ...
2560x1440 59.95*+
2048x1152 60.00
1920x1200 59.88
... then the second screen lock & resume reduces the current resolution to 2048x1152:
Screen 0: minimum 320 x 200, current 2048 x 1152, maximum 8192 x 8192 ...
DP-1 connected primary 2048x1152+0+0 (normal left inverted right x axis y axis) 699mm x 393mm
2048x1152 60.00*
1920x1200 59.88
... and the third reduces the screen to 1920x1200, going further down the list each time: progressively eliminating the highest pair of available screen resolution & video frequency with each screen lock.
The monitor is an Acer EB321HQU - turning it off & on again has no effect on the resolutions available unless the system is also rebooted. There are related bug reports but only confirmed for nVidia graphics cards, not applicable in my case. I've also tried these so far, with no effect on the problem:
- switching from default
gdm3tolightdm
- upgrading video driver
xserver-xorg-video-intel/bionicfrom native2:2.99.917+git20171229-1to newer version at Open Graphics Drivers PPA2:2.99.917+git1903011933.6afed3~oibaf~b amd64
EDIT: disconnecting & reconnecting the DP cable reduces the maximum resolution even further, to 1024x768.
18.04 xorg screen display-resolution lock-screen
asked Mar 17 at 14:45
rphairrphair
387
add a comment |
I'm on Ubuntu 18.04 desktop, with Intel HD Integrated Graphics and a single 2560x1440 screen connected with a DP (DisplayPort) cable. I've not had this problem using the same desktop with smaller monitors.
On this large monitor, each time I resume from locking the screen (entering my password for the system's only user account), the highest available resolution is progressively eliminated from the list of choices in both GNOME Settings and the options displayed by xrandr. Initially, after the system boot:
$ xrandr
Screen 0: minimum 320 x 200, current 2560 x 1440, maximum 8192 x 8192
VGA-1 disconnected (normal left inverted right x axis y axis)
HDMI-1 disconnected (normal left inverted right x axis y axis)
DP-1 connected primary 2560x1440+0+0 (normal left inverted right x axis y axis) 699mm x 393mm
2560x1440 59.95*+
2880x1620 60.00
2048x1152 60.00
1920x1200 59.88
... then after the first screen lock & resume, a higher than natural resolution is eliminated (through having no visible effect yet):
Screen 0: minimum 320 x 200, current 2560 x 1440, maximum 8192 x 8192 ...
2560x1440 59.95*+
2048x1152 60.00
1920x1200 59.88
... then the second screen lock & resume reduces the current resolution to 2048x1152:
Screen 0: minimum 320 x 200, current 2048 x 1152, maximum 8192 x 8192 ...
DP-1 connected primary 2048x1152+0+0 (normal left inverted right x axis y axis) 699mm x 393mm
2048x1152 60.00*
1920x1200 59.88
... and the third reduces the screen to 1920x1200, going further down the list each time: progressively eliminating the highest pair of available screen resolution & video frequency with each screen lock.
The monitor is an Acer EB321HQU - turning it off & on again has no effect on the resolutions available unless the system is also rebooted. There are related bug reports but only confirmed for nVidia graphics cards, not applicable in my case. I've also tried these so far, with no effect on the problem:
- switching from default
gdm3tolightdm
- upgrading video driver
xserver-xorg-video-intel/bionicfrom native2:2.99.917+git20171229-1to newer version at Open Graphics Drivers PPA2:2.99.917+git1903011933.6afed3~oibaf~b amd64
EDIT: disconnecting & reconnecting the DP cable reduces the maximum resolution even further, to 1024x768.
18.04 xorg screen display-resolution lock-screen
asked Mar 17 at 14:45
rphairrphair
387
I'm on Ubuntu 18.04 desktop, with Intel HD Integrated Graphics and a single 2560x1440 screen connected with a DP (DisplayPort) cable. I've not had this problem using the same desktop with smaller monitors.
On this large monitor, each time I resume from locking the screen (entering my password for the system's only user account), the highest available resolution is progressively eliminated from the list of choices in both GNOME Settings and the options displayed by xrandr. Initially, after the system boot:
$ xrandr
Screen 0: minimum 320 x 200, current 2560 x 1440, maximum 8192 x 8192
VGA-1 disconnected (normal left inverted right x axis y axis)
HDMI-1 disconnected (normal left inverted right x axis y axis)
DP-1 connected primary 2560x1440+0+0 (normal left inverted right x axis y axis) 699mm x 393mm
2560x1440 59.95*+
2880x1620 60.00
2048x1152 60.00
1920x1200 59.88
... then after the first screen lock & resume, a higher than natural resolution is eliminated (through having no visible effect yet):
Screen 0: minimum 320 x 200, current 2560 x 1440, maximum 8192 x 8192 ...
2560x1440 59.95*+
2048x1152 60.00
1920x1200 59.88
... then the second screen lock & resume reduces the current resolution to 2048x1152:
Screen 0: minimum 320 x 200, current 2048 x 1152, maximum 8192 x 8192 ...
DP-1 connected primary 2048x1152+0+0 (normal left inverted right x axis y axis) 699mm x 393mm
2048x1152 60.00*
1920x1200 59.88
... and the third reduces the screen to 1920x1200, going further down the list each time: progressively eliminating the highest pair of available screen resolution & video frequency with each screen lock.
The monitor is an Acer EB321HQU - turning it off & on again has no effect on the resolutions available unless the system is also rebooted. There are related bug reports but only confirmed for nVidia graphics cards, not applicable in my case. I've also tried these so far, with no effect on the problem:
- switching from default
gdm3tolightdm
- upgrading video driver
xserver-xorg-video-intel/bionicfrom native2:2.99.917+git20171229-1to newer version at Open Graphics Drivers PPA2:2.99.917+git1903011933.6afed3~oibaf~b amd64
EDIT: disconnecting & reconnecting the DP cable reduces the maximum resolution even further, to 1024x768.
18.04 xorg screen display-resolution lock-screen
18.04 xorg screen display-resolution lock-screen
asked Mar 17 at 14:45
rphairrphair
387
asked Mar 17 at 14:45
rphairrphair
387
edited Mar 17 at 17:08
rphair
asked Mar 17 at 14:45
rphairrphair
387
asked Mar 17 at 14:45
rphairrphair
387
asked Mar 17 at 14:45
rphairrphair
387
387
add a comment |
add a comment |
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