Screen resolution changes after sleep drivers#
Screen resolution changes after sleep password#
Screen resolution changes after sleep windows#

The Ubuntu doc page X/Config/Resolution > statically setup in nf gives a good overview of X configuration and relevant issues.Дў, my own solution) However, in the Xorg log file I found that

Screen resolution changes after sleep windows#

confirming it with the PowerStrip program in Windows ( tutorial).reading it from the X server startup log file in /var/log/Xorg.0.log.I was able to get this Modeline in 2 ways (there are others): Explicitly setting the Modeline tends to ensure this resolution is available to the X server no matter what the EDID response. The X server uses a system called EDID to query the resolutions automatically and there are many reported problems of both external and laptop displays getting incomplete results (I first thought this was happening to me after screenlock/unlock and suspend/resume). Here's where my own solution diverges from a more simpler, general one:ДЎ, general) Users of some graphics cards may be able simply to fix this by adding lines appropriate for the misbehaving monitor in the section beginning with Section 'Monitor': Modeline '2560x1440' 241.50 2560 2608 2640 2720 1440 1443 1448 1481 -hsync -vsync Then copy the resulting file /root/ to /etc/X11/nf which will be a new file on latter versions of Ubuntu since X parameters are automatically determined by default. EDIT: disconnecting & reconnecting the DP cable reduces the maximum resolution even further, to 1024x768.ДЇirst generate a template nf file as follows (which should work even if you're running X / GNOME / display manager already): sudo X :2 -configure.

Screen resolution changes after sleep drivers#

upgrading video driver xserver-xorg-video-intel/bionic from native 2:2.99.917+git20171229-1 to newer version at Open Graphics Drivers PPA 2:2.99.917+git1903011933.6afed3~oibaf~b amd64.

I've also tried these so far, with no effect on the problem: There are related bug reports but only confirmed for nVidia graphics cards, not applicable in my case. The monitor is an Acer EB321HQU - turning it off & on again has no effect on the resolutions available unless the system is also rebooted. 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. ДP-1 connected primary 2048x1152+0+0 (normal left inverted right x axis y axis) 699mm x 393mm 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. 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. HDMI-1 disconnected (normal left inverted right x axis y axis)ДP-1 connected primary 2560x1440+0+0 (normal left inverted right x axis y axis) 699mm x 393mm VGA-1 disconnected (normal left inverted right x axis y axis) Initially, after the system boot: $ xrandr

Screen resolution changes after sleep password#

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. I've not had this problem using the same desktop with smaller monitors. I'm on Ubuntu 18.04 desktop, with Intel HD Integrated Graphics and a single 2560x1440 screen connected with a DP (DisplayPort) cable.