Ubuntu
xserver-xorg-video-intel package

[regression from 12.04] VGA Monitor uses reduced resolution

Bug #1049534 reported by iroli on 2012-09-12

This bug affects 7 people

Affects		Status	Importance	Assigned to	Milestone
	xserver-xorg-video-intel (Ubuntu)	Fix Released	Medium	Timo Aaltonen

Bug Description

Just upgraded from 12.04 to 12.10 beta. I have a dual monitor setup and the monitor connected to the VGA port is useing a reduced default resolution (1024x768) instead of it's native resolution 1280x1024 since the upgrade. I also noticed that the EDID information is missing from Xorg.0.log.

I also attach an old Xorg log file (from 12.04) where the EDID information is correct.

ProblemType: Bug
DistroRelease: Ubuntu 12.10
Package: xserver-xorg-video-intel 2:2.20.6-0ubuntu1
ProcVersionSignature: Ubuntu 3.5.0-14.16-generic 3.5.3
Uname: Linux 3.5.0-14-generic x86_64
ApportVersion: 2.5.1-0ubuntu7
Architecture: amd64
CurrentDmesg: Error: command ['sh', '-c', 'dmesg | comm -13 --nocheck-order /var/log/dmesg -'] failed with exit code 1: comm: /var/log/dmesg: Permission denied
Date: Wed Sep 12 10:11:56 2012
DistUpgraded: 2012-09-12 09:52:48,699 DEBUG enabling apt cron job
DistroCodename: quantal
DistroVariant: ubuntu
DkmsStatus:
virtualbox, 4.1.18, 3.2.0-29-generic, x86_64: installed
virtualbox, 4.1.18, 3.5.0-14-generic, x86_64: installed
GraphicsCard:
Intel Corporation 2nd Generation Core Processor Family Integrated Graphics Controller [8086:0102] (rev 09) (prog-if 00 [VGA controller])
Subsystem: Intel Corporation Device [8086:200e]
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Beta amd64 (20120328)
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.5.0-14-generic root=UUID=6016ba0a-e0a2-4102-b766-e77d9239fa12 ro quiet splash vt.handoff=7
SourcePackage: xserver-xorg-video-intel
UpgradeStatus: Upgraded to quantal on 2012-09-12 (0 days ago)
dmi.bios.date: 01/10/2012
dmi.bios.vendor: Intel Corp.
dmi.bios.version: BEH6110H.86A.0038.2012.0110.1653
dmi.board.asset.tag: To be filled by O.E.M.
dmi.board.name: DH61DL
dmi.board.vendor: Intel Corporation
dmi.board.version: AAG14066-205
dmi.chassis.type: 3
dmi.modalias: dmi:bvnIntelCorp.:bvrBEH6110H.86A.0038.2012.0110.1653:bd01/10/2012:svn:pn:pvr:rvnIntelCorporation:rnDH61DL:rvrAAG14066-205:cvn:ct3:cvr:
version.compiz: compiz 1:0.9.8.0-0ubuntu1
version.ia32-libs: ia32-libs 20090808ubuntu36
version.libdrm2: libdrm2 2.4.39-0ubuntu1
version.libgl1-mesa-dri: libgl1-mesa-dri 9.0~git20120903.e1673d20.is.git20120821.c1114c61-0ubuntu1
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 9.0~git20120903.e1673d20.is.git20120821.c1114c61-0ubuntu1
version.xserver-xorg-core: xserver-xorg-core 2:1.13.0-0ubuntu1
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.7.3-0ubuntu1
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:6.99.99~git20120713.6ef1ad6a-0ubuntu1
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.20.6-0ubuntu1
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.1-4~ubuntu1

Tags:

Revision history for this message

iroli (roland-lezuo) wrote on 2012-09-12:

BootLog.txt Edit (1.7 KiB, text/plain; charset="utf-8")
Dependencies.txt Edit (3.9 KiB, text/plain; charset="utf-8")
DpkgLog.txt Edit (2.2 MiB, text/plain; charset="utf-8")
LightdmDisplayLog.txt Edit (2.4 KiB, text/plain; charset="utf-8")
LightdmGreeterLog.txt Edit (6.5 KiB, text/plain; charset="utf-8")
LightdmGreeterLogOld.txt Edit (7.2 KiB, text/plain; charset="utf-8")
LightdmLog.txt Edit (65.1 KiB, text/plain; charset="utf-8")
Lspci.txt Edit (8.0 KiB, text/plain; charset="utf-8")
Lsusb.txt Edit (633 bytes, text/plain; charset="utf-8")
MonitorsUser.xml.txt Edit (3.7 KiB, text/plain; charset="utf-8")
ProcCpuinfo.txt Edit (3.5 KiB, text/plain; charset="utf-8")
ProcEnviron.txt Edit (279 bytes, text/plain; charset="utf-8")
ProcInterrupts.txt Edit (2.5 KiB, text/plain; charset="utf-8")
ProcModules.txt Edit (2.7 KiB, text/plain; charset="utf-8")
UdevDb.txt Edit (130.2 KiB, text/plain; charset="utf-8")
UdevLog.txt Edit (288.5 KiB, text/plain; charset="utf-8")
XorgLog.txt Edit (32.8 KiB, text/plain; charset="utf-8")
XorgLogOld.txt Edit (35.5 KiB, text/plain; charset="utf-8")
Xrandr.txt Edit (8.7 KiB, text/plain; charset="utf-8")
xdpyinfo.txt Edit (11.6 KiB, text/plain; charset="utf-8")

Revision history for this message

iroli (roland-lezuo) wrote on 2012-09-12:

old Xorg log with correct EDID information Edit (36.2 KiB, text/plain)

bugbot (bugbot) on 2012-09-13

tags:

added: precise

bugbot (bugbot) on 2012-09-13

tags:

added: resolution

Revision history for this message

iroli (roland-lezuo) wrote on 2012-09-26:

I found a way to work around the issue:

$ xrandr --addmode VGA1 1280x1024
$ xrandr --output VGA1 --mode 1280x1024

but I have to do this after every reboot which is not a good solution. I also found out that EDID information is not detected correctly by the i915 drm modul, as
/sys/module/drm/drivers/pci:i915/0000:00:02.0/drm/card0/card0-VGA-1/edid is an empty file.

Revision history for this message

Timo Aaltonen (tjaalton) wrote on 2012-09-28:

this needs to be forwarded to upstream

Changed in xserver-xorg-video-intel (Ubuntu):
assignee:	nobody → Timo Aaltonen (tjaalton)
importance:	Undecided → Medium
status:	New → Triaged

Revision history for this message

Timo Aaltonen (tjaalton) wrote on 2012-10-03:

Do you perhaps use a dock with the laptop, and boot with the monitor connected to the dock? If yes, what if you boot without the monitor attached?

Changed in xserver-xorg-video-intel (Ubuntu):
status:	Triaged → Incomplete

Revision history for this message

Timo Aaltonen (tjaalton) wrote on 2012-10-03:

Let me rephrase: boot with the machine undocked, then dock it once logged in. Does it work then?

Revision history for this message

iroli (roland-lezuo) wrote on 2012-10-04:

It is no Laptop, it is a PC and the monitors are connected directly.
I tried booting the system with the VGA monitor not attached and attached it later (when logged in already).
The monitor was detected, with reduced resolution however, so this dit NOT fix the issue.

Revision history for this message

Timo Aaltonen (tjaalton) wrote on 2012-10-04:

ah, hehe, assumed it was.

Changed in xserver-xorg-video-intel (Ubuntu):
status:	Incomplete → Triaged

Revision history for this message

Maarten Lankhorst (mlankhorst) wrote on 2012-10-04:

Seems like this might be fixed in the next linux-image based on 3.5.5 with the following patch:
"drm/i915: fall back to bit-banging if GMBUS fails in CRT EDID reads"

Once linux-image-3.5.0-17-generic is available, could you test with that?

Changed in xserver-xorg-video-intel (Ubuntu):
status:	Triaged → Fix Committed

Revision history for this message

iroli (roland-lezuo) wrote on 2012-10-05:

#10

indeed it is fixed in linux-image-3.5.0-17-generic

Changed in xserver-xorg-video-intel (Ubuntu):
status:	Fix Committed → Fix Released

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[regression from 12.04] VGA Monitor uses reduced resolution

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xserver-xorg-video-intel package