[Expired for xorg-server (Ubuntu) because there has been no activity for
60 days.]
** Changed in: xorg-server (Ubuntu)
Status: Incomplete => Expired
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https://bugs.launchpad.net/bugs/1153976
Title:
Low CRT refresh rate selected when higher is available
Status in “xorg-server” package in Ubuntu:
Expired
Bug description:
My CRT monitor - ADI Systems 16" - is correctly recognized and the
list of supported resolutions in System Settings > Displays looks good
(not all resolutions are listed, but the one's I'm interested in are).
At higher resolutions the monitor only supports low refresh rate, so I
select a highest resolution where 85Hz rate is supported, but the
actual mode set is that resoltion at 60Hz. Here is the xrandr output:
$ xrandr
Screen 0: minimum 320 x 200, current 1366 x 1536, maximum 8192 x 8192
LVDS1 connected 1366x768+0+768 (normal left inverted right x axis y axis)
344mm x 194mm
...
VGA1 connected 1280x768+86+0 (normal left inverted right x axis y axis) 320mm
x 240mm
1280x1024 60.0
1280x960 60.0
1280x800 74.9 59.8
1152x864 75.0
1280x768 84.8 74.9 59.9*
1024x768 85.0 75.1 70.1 60.0 43.5
800x600 85.1 72.2 75.0 60.3 56.2
848x480 60.0
640x480 85.0 72.8 75.0 60.0 63.1
720x400 85.0
640x400 85.1
640x350 85.1
HDMI1 disconnected (normal left inverted right x axis y axis)
DP1 disconnected (normal left inverted right x axis y axis)
I want the OS to select 1280x768 @ 85Hz (or 84.8 as reported). I can
switch to this mode manually with this command:
$ xrandr --output VGA1 --mode 1280x768
after which the corresponding line of xrandr output changes to:
1280x768 84.8* 74.9 59.9
as well as the monitor itself reports that it has switched to 85Hz,
and I didn't even explicitly asked xrandr for it.
That should have happened automatically.
I've been away from desktop linux for couple of years and am not sure
anymore what is the actual package resposible for this and what other
information is useful for developers, but if pointed to the right
direction will supply whatever you need.
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