Radeon X300 detect too many screens
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
xserver-xorg-video-ati (Ubuntu) |
Invalid
|
Low
|
Unassigned |
Bug Description
Binary package hint: xserver-
After the upgrade to Karmic from Jaunty, my Thinkpad Z60m can no longer use the external monitor connected via VGA. When I plug in the monitor and "Detect Monitors", the system detect 3 instead of 2. The laptop LVDS display is always there, but when I connect the VGA monitor, xrandr (and Display Preferences) detect the VGA monitor and a third display (DVI-0). It didn't do this in Jaunty. For some reason this prevents me from using the correct resolution on the external VGA display (1680x1050, the same as the laptop LVDS).
xrandr output with nothing connected:
$ xrandr
Screen 0: minimum 320 x 200, current 1680 x 1050, maximum 1680 x 1680
VGA-0 disconnected (normal left inverted right x axis y axis)
DVI-0 disconnected (normal left inverted right x axis y axis)
LVDS connected 1680x1050+0+0 (normal left inverted right x axis y axis) 331mm x 207mm
1680x1050 60.1*+ 50.1
1400x1050 60.0
1280x1024 59.9
1440x900 59.9
1280x960 59.9
1280x854 59.9
1280x800 59.8
1280x720 59.9
1152x768 59.8
1024x768 59.9
800x600 59.9
640x480 59.4
S-video disconnected (normal left inverted right x axis y axis)
xrandr with the external display attached via VGA:
$ xrandr
Screen 0: minimum 320 x 200, current 1680 x 1050, maximum 1680 x 1680
VGA-0 connected (normal left inverted right x axis y axis)
1360x768 59.8
1152x864 60.0
1024x768 60.0
800x600 60.3
640x480 59.9
DVI-0 connected (normal left inverted right x axis y axis)
1360x768 59.8
1152x864 60.0
1024x768 60.0
800x600 60.3
640x480 59.9
LVDS connected 1680x1050+0+0 (normal left inverted right x axis y axis) 331mm x 207mm
1680x1050 60.1*+ 50.1
1400x1050 60.0
1280x1024 59.9
1440x900 59.9
1280x960 59.9
1280x854 59.9
1280x800 59.8
1280x720 59.9
1152x768 59.8
1024x768 59.9
800x600 59.9
640x480 59.4
S-video disconnected (normal left inverted right x axis y axis)
As you can see, it incorrectly detects a DVI-0 zero screen, and uses the same modes (max of 1360x768) for that and the VGA-0 display which should have 1680x1050 available.
I've tried using xrandr to only enable the VGA display, but have had no success.
I've tried the following in xorg.conf without success:
Section "Device"
Identifier "Configured Video Device"
Driver "radeon"
Option "MonitorLayout" "LVDS,CRT"
EndSection
Is there a known work around to this? Or is there a bug in the radeon driver which is mis-detected a phantom display?
ProblemType: Bug
Architecture: i386
Date: Sat Jan 9 14:57:50 2010
DistroRelease: Ubuntu 9.10
MachineType: IBM 2529E8U
Package: xserver-
PccardctlIdent:
Socket 0:
no product info available
PccardctlStatus:
Socket 0:
no card
ProcCmdLine: root=UUID=
ProcEnviron:
LANGUAGE=
PATH=(custom, user)
LANG=en_US.UTF-8
SHELL=/bin/bash
ProcVersionSign
RelatedPackageV
xserver-xorg 1:7.4+3ubuntu10
libgl1-mesa-glx 7.6.0-1ubuntu4
libdrm2 2.4.14-1ubuntu1
xserver-
xserver-
SourcePackage: xserver-
Uname: Linux 2.6.31-16-386 i686
dmi.bios.date: 12/20/2005
dmi.bios.vendor: IBM
dmi.bios.version: 77ET54WW (1.14 )
dmi.board.name: 2529E8U
dmi.board.vendor: IBM
dmi.board.version: Not Available
dmi.chassis.
dmi.chassis.type: 10
dmi.chassis.vendor: IBM
dmi.chassis.
dmi.modalias: dmi:bvnIBM:
dmi.product.name: 2529E8U
dmi.product.
dmi.sys.vendor: IBM
fglrx: Not loaded
system:
distro: Ubuntu
architecture: i686kernel: 2.6.31-16-386
Changed in xserver-xorg-video-ati (Ubuntu): | |
status: | New → Confirmed |
tags: | added: karmic |
Changed in xserver-xorg-video-ati (Ubuntu): | |
status: | Expired → New |
[This is an automatic notification.]
Hi dvhart,
This bug was reported against an earlier version of Ubuntu, can you
test if it still occurs on Lucid?
Please note we also provide technical support for older versions of
Ubuntu, but not in the bug tracker. Instead, to raise the issue through
normal support channels, please see:
http:// www.ubuntu. com/support
If you are the original reporter and can still reproduce the issue on
Lucid, please run the following command to refresh the report:
apport-collect 505300
If you are not the original reporter, please file a new bug report, so
we can work with you as the original reporter instead (you can reference
bug 505300 in your report if you think it may be related):
ubuntu-bug xorg
If by chance you can no longer reproduce the issue on Lucid or if you
feel it is no longer relevant, please mark the bug report 'Fix Released'
or 'Invalid' as appropriate, at the following URL:
https:/ /bugs.launchpad .net/ubuntu/ +bug/505300