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[jan <jan-ubuntu@xxxxxxxxxxxxxx>]

Public bug reported:

Binary package hint: xserver-xorg-video-ati

After the upgrade to Lucid, certain games did not play anymore on my Compaq EVO n620c.
The screen became black, and the computer thus unusable.

Reproducing it started when I realized that the same problem appeared when setting 640x480 resolution from the monitor settings menu.
Per-lucid releases did either NOT allow 640x480 resolution or a setting that I so far haven't found.
I found no 640x480 resolution that the used monitor supports.
Adding a Monitor entry restricting the horizontal sync range, the problem was mitigated.
The game now plays well at 800x600 resolution: the lowest attempted.

This is a nasty regression problem, that took me a day to figure out.

New Monitor entry:
Section "Monitor"
#Identifier "LTN141XC-L01"
Identifier "LVDS"
HorizSync 31-100
VertRefresh 45-85
# 800x600 74.91 Hz (CVT 0.48M3) hsync: 47.12 kHz; pclk: 49.00 MHz
Modeline "800x600_75.00"   49.00  800 840 920 1040  600 603 607 629 -hsync +vsync
EndSection

ProblemType: Bug
DistroRelease: Ubuntu 10.04
Package: xserver-xorg-video-ati 1:6.13.0-1ubuntu5
ProcVersionSignature: Ubuntu 2.6.32-22.36-generic 2.6.32.11+drm33.2
Uname: Linux 2.6.32-22-generic i686
Architecture: i386
CheckboxSubmission: e869c7f682b084d131f4ad9638592321
CheckboxSystem: 0f148840a11ccd18c82eb6b9067e2487
Date: Mon Jun  7 21:53:42 2010
DkmsStatus: Error: [Errno 2] No such file or directory
Lsusb:
 Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
 Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
 Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
 Bus 001 Device 002: ID 13b1:0020 Linksys WUSB54GC 802.11g Adapter [ralink rt73]
 Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
MachineType: Compaq Evo N620c DE264A
PccardctlIdent:
 Socket 0:
   no product info available
 Socket 1:
   no product info available
PccardctlStatus:
 Socket 0:
   no card
 Socket 1:
   no card
ProcCmdLine: root=UUID=6672d142-b6cb-41f1-ad67-307e1ff9d296 ro nosplash
ProcEnviron:
 LANG=en_US.utf8
 SHELL=/bin/bash
SourcePackage: xserver-xorg-video-ati
dmi.bios.date: 11/21/2003
dmi.bios.vendor: Compaq
dmi.bios.version: 68BAF Ver. F.0E
dmi.board.name: 0824
dmi.board.vendor: Compaq
dmi.board.version: 8051 Version 19.1F
dmi.chassis.type: 10
dmi.chassis.vendor: Compaq
dmi.modalias: dmi:bvnCompaq:bvr68BAFVer.F.0E:bd11/21/2003:svnCompaq:pnEvoN620cDE264A:pvrF.0E:rvnCompaq:rn0824:rvr8051Version19.1F:cvnCompaq:ct10:cvr:
dmi.product.name: Evo N620c DE264A
dmi.product.version: F.0E
dmi.sys.vendor: Compaq
system:
 distro:             Ubuntu
 codename:           lucid
 architecture:       i686
 kernel:             2.6.32-22-generic

** Affects: xserver-xorg-video-ati (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: apport-bug i386 lucid

-- 
After Lucid upgrade, invalid LVDS modes shown
https://bugs.launchpad.net/bugs/590954
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