[i945gme] External screen resolution is not detected correctly

[Jonathan Ernst]

Binary package hint: xorg

The problem occurs with an HP w25558hc 26´´ LCD monitor hooked up on the VGA port of an HP Mini with Intel Corporation Mobile 945GM/GMS/GME, 943/940GML Express Integrated Graphics Controller on Jaunty.

The maximum resolution (when using only the external screen) detected by xrandr and the display configuration tool is

1280x1024

Instead of the correct maximum resolution of

1920x1200

The maximum resolution is correctly shown in Xorg.0.log AND ddcprobe AND xresprobe, but not with xrandr and thus cannot be used...

ProblemType: Bug
Architecture: i386
DistroRelease: Ubuntu 9.04
NonfreeKernelModules: wl
Package: xserver-xorg 1:7.4~5ubuntu18 [modified: usr/bin/X]
ProcEnviron:
 PATH=(custom, no user)
 LANG=en_US.UTF-8
 SHELL=/bin/bash
ProcVersion: Linux version 2.6.28-13-generic (buildd@vernadsky) (gcc version 4.3.3 (Ubuntu 4.3.3-5ubuntu4) ) #45-Ubuntu SMP Tue Jun 30 19:49:51 UTC 2009
SourcePackage: xorg
Tags: ubuntu-unr
Uname: Linux 2.6.28-13-generic i686
UnreportableReason: This is not a genuine Ubuntu package

[lspci]
00:00.0 Host bridge [0600]: Intel Corporation Mobile 945GME Express Memory Controller Hub [8086:27ac] (rev 03)
     Subsystem: Hewlett-Packard Company Device [103c:3056]
00:02.0 VGA compatible controller [0300]: Intel Corporation Mobile 945GME Express Integrated Graphics Controller [8086:27ae] (rev 03)
     Subsystem: Hewlett-Packard Company Device [103c:3056]

[Bryce Harrington (bryce)]

Well, next I'd like to forward this issue upstream, but first it must be retested on latest development version of Karmic to make sure the issue still happens there with the latest code. ISO images are available via http://www.ubuntu.com/testing/. If you can reproduce it in the LiveCD environment, you shouldn't need to modify your installed system. Also please attach a fresh Xorg.0.log and dmesg from this testing.

[Jonathan Ernst (jonathan.ernst)]

Using xorg-edgers ppa this bug is gone (I cannot install karmic on this netbook because it's not mine).

Thanks for looking into this bug Bryce

[Jonathan Ernst (jonathan.ernst)]

I spoke too fast.

I was able to do a do-release-upgrade on this netbook and reproduce the problem with another screen (once again the top resolution is not available in xrandr but detected correctly by Xorg)

$ dpkg -l xserver-xorg
Desired=Unknown/Install/Remove/Purge/Hold
| Status=Not/Inst/Cfg-files/Unpacked/Failed-cfg/Half-inst/trig-aWait/Trig-pend
|/ Err?=(none)/Hold/Reinst-required/X=both-problems (Status,Err: uppercase=bad)
||/ Name Version Description
+++-==============-==============-============================================
ii xserver-xorg 1:7.4+3ubuntu5 the X.Org X server

$ dpkg -l xserver-xorg-video-intel
Desired=Unknown/Install/Remove/Purge/Hold
| Status=Not/Inst/Cfg-files/Unpacked/Failed-cfg/Half-inst/trig-aWait/Trig-pend
|/ Err?=(none)/Hold/Reinst-required/X=both-problems (Status,Err: uppercase=bad)
||/ Name Version Description
+++-==============-==============-============================================
ii xserver-xorg-v 2:2.8.0+git200 X.Org X server -- Intel i8xx, i9xx display d

[Jeremy Foshee (jeremyfoshee)]

Jonathan,
      As you may be aware, modesetting has moved into the kernel. As such, I'd appreciate if you could test this against a LiveCD of the Latest Lucid (if that is possible). Additionally, if you do encounter this still, a test against the latest mainline vanilla kernel would be helpful.

I'm adding a kernel task to this bug and marking the xorg task as invalid.

Thanks!

-JFo

[Jeremy Foshee (jeremyfoshee)]

This bug report was marked as Incomplete and has not had any updated comments for quite some time. As a result this bug is being closed. Please reopen if this is still an issue in the current Ubuntu release http://www.ubuntu.com/getubuntu/download . Also, please be sure to provide any requested information that may have been missing. To reopen the bug, click on the current status under the Status column and change the status back to "New". Thanks.

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