[Radeon Xpress 200M] screen garbled after changing resolution with VESA driver

[David Tombs]

Binary package hint: xorg

When changing resolution from 1024x764 -> 800x600 with the VESA driver, the screen becomes garbled (including the cursor).

Steps to reproduce:
1) Make an xorg.conf using the VESA driver. (I modified the one generated by Xorg -configure to do this.)
2) Reboot with parameter radeon.modeset=0 to allow VESA driver to load.
3) Login.
4) Open System -> Preferences -> Monitors, change resolution to 800x600.
5) Click Apply.
6) Screen becomes garbled, including cursor.
7) Press ESC to cancel the resolution change and switch back to 1024x768, after which everything is fine.

This is probably a dupe of bug 138087, but I was instructed there to file a new report.

ProblemType: Bug
DistroRelease: Ubuntu 10.04
Package: xorg 1:7.5+5ubuntu1
ProcVersionSignature: Ubuntu 2.6.32-22.33-generic 2.6.32.11+drm33.2
Uname: Linux 2.6.32-22-generic i686
Architecture: i386
CurrentDmesg:
 [ 29.773441] ppdev: user-space parallel port driver
 [ 31.015612] usb 2-3: usbfs: interface 0 claimed by usblp while 'usb' sets config #1
 [ 40.212021] eth0: no IPv6 routers present
Date: Thu May 27 12:33:07 2010
DkmsStatus:
 virtualbox-ose, 3.1.6, 2.6.32-22-generic, i686: installed
 virtualbox-ose, 3.1.6, 2.6.31-21-generic, i686: built
InstallationMedia: Ubuntu 9.10 "Karmic Koala" - Release i386 (20091028.5)
MachineType: Hewlett-Packard Presario R4100 (PN495AV)
PccardctlIdent:
 Socket 0:
   no product info available
PccardctlStatus:
 Socket 0:
   no card
ProcCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.32-22-generic root=UUID=0cfd377a-9f6f-4bce-9e39-93b5c7150c21 ro i8042.reset radeon.modeset=0
ProcEnviron:
 PATH=(custom, user)
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: xorg
dmi.bios.date: 08/24/2006
dmi.bios.vendor: Hewlett-Packard
dmi.bios.version: F.1C
dmi.board.name: 3085
dmi.board.vendor: Hewlett-Packard
dmi.board.version: 42.3B
dmi.chassis.type: 10
dmi.chassis.vendor: Hewlett-Packard
dmi.chassis.version: N/A
dmi.modalias: dmi:bvnHewlett-Packard:bvrF.1C:bd08/24/2006:svnHewlett-Packard:pnPresarioR4100(PN495AV):pvrF.1C:rvnHewlett-Packard:rn3085:rvr42.3B:cvnHewlett-Packard:ct10:cvrN/A:
dmi.product.name: Presario R4100 (PN495AV)
dmi.product.version: F.1C
dmi.sys.vendor: Hewlett-Packard
system:
 distro: Ubuntu
 codename: lucid
 architecture: i686
 kernel: 2.6.32-22-generic

[David Tombs (dgtombs)]

Here's a photo of the resulting effect.

[David Tombs (dgtombs)]

I'm assuming that last package change was automated, so I'm going to switch this over to vesa since I wasn't using the ati driver at the time.