default resolution is ridiculously high

[Mikel Ward]

10.10 beta was working fine.

Then yesterday I did an apt-get dist-upgrade (sources.list points to maverick), and after rebooting, my X server defaulted to a ridiculously high resolution, something non-standard slightly higher than 1600x1200.

My monitor is a 17" Sony CRT, which works well at 1024x768x85 or 1280x1024x85, and supports 1600x1200x60, but everything is far too small at that resolution.

The default until recently was 1024x768, which I think was perfect.

Also note that during boot, the screen flickers several times, possibly more than it did previously.

dmesg has:
Sep 19 23:18:30 mikel-desktop kernel: [ 1578.773390]
Sep 19 23:18:30 mikel-desktop kernel: [ 1578.827170]
Sep 19 23:18:30 mikel-desktop kernel: [ 1578.876465]
Sep 19 23:18:30 mikel-desktop kernel: [ 1578.925753]
Sep 19 23:18:30 mikel-desktop kernel: [ 1578.925756] radeon 0000:01:05.0: HDMI Type A-1: EDID block 0 invalid.
Sep 19 23:18:40 mikel-desktop kernel: [ 1589.013301]
Sep 19 23:18:40 mikel-desktop kernel: [ 1589.063190]
Sep 19 23:18:40 mikel-desktop kernel: [ 1589.113060]
Sep 19 23:18:40 mikel-desktop kernel: [ 1589.166375]
Sep 19 23:18:40 mikel-desktop kernel: [ 1589.166379] radeon 0000:01:05.0: HDMI Type A-1: EDID block 0 invalid.

I will attach my current Xorg.0.log. The version from when I had 10.10 beta seems to have been rotated away. :-(

Worse is that I can't easily change it, as /etc/X11/xorg.conf does not exist, and there doesn't seem to be any GUI to change the login screen resolution.

[Mikel Ward (mikelward)]

Similar bugs:
https://bugs.launchpad.net/ubuntu/+source/xorg-server/+bug/598704
https://bugs.launchpad.net/ubuntu/+source/xorg-server/+bug/596943

but those were reported a while back, whereas mine appears to be a recent regression, which is why I filed a separate report.

[Mikel Ward (mikelward)]

Have attached output of
    get-edid >get-edid.out 2>get-edid.err

in case that's useful.

[Mikel Ward (mikelward)]

I did "Switch User" which started a separate X server for the login screen.

Log attached.

It shows the selected resolution was 1856x1392, which on a 17" display is definitely suboptimal.

[Mikel Ward (mikelward)]

most relevant packages:
ii xserver-xorg-core 2:1.9.0-0ubuntu7 Xorg X server - core server
ii xserver-common 2:1.9.0-0ubuntu7 common files used by various X servers
ii xserver-xorg-video-ati 1:6.13.1-1ubuntu5 X.Org X server -- AMD/ATI display driver wrapper
ii xserver-xorg-video-radeon 1:6.13.1-1ubuntu5 X.Org X server -- AMD/ATI Radeon display driver
ii plymouth 0.8.2-2ubuntu4 graphical boot animation and logger - main package

kernel version (uname -r):
2.6.35-22-generic

video card info (lspci -v):
01:05.0 VGA compatible controller: ATI Technologies Inc RS690 [Radeon X1200 Series] (prog-if 00 [VGA controller])
 Subsystem: ASUSTeK Computer Inc. Device 826d
 Flags: bus master, fast devsel, latency 64, IRQ 18
 Memory at f0000000 (64-bit, prefetchable) [size=128M]
 Memory at fdcf0000 (64-bit, non-prefetchable) [size=64K]
 I/O ports at de00 [size=256]
 Memory at fdb00000 (32-bit, non-prefetchable) [size=1M]
 Expansion ROM at <unassigned> [disabled]
 Capabilities: <access denied>
 Kernel driver in use: radeon
 Kernel modules: radeon

[Mikel Ward (mikelward)]

Monitor model is SONY CPD-G220, in case that doesn't appear above.

[penalvch (penalvch)]

Mikel Ward, this bug was reported a while ago and there hasn't been any activity in it recently. We were wondering if this is still an issue? If so, could you please test for this with the latest development release of Ubuntu? ISO images are available from http://cdimage.ubuntu.com/daily-live/current/ .

If it remains an issue, could you please run the following command in the development release from a Terminal (Applications->Accessories->Terminal), as it will automatically gather and attach updated debug information to this report:

apport-collect -p xorg-server REPLACE-WITH-BUG-NUMBER

Please note, given you already have done this in a prior release, performing this on a release prior to Trusty would not be helpful.

Thank you for your understanding.

Helpful bug reporting tips:
https://wiki.ubuntu.com/ReportingBugs

[Launchpad Janitor (janitor)]

[Expired for xorg-server (Ubuntu) because there has been no activity for 60 days.]