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[laramichaels1978 <laramichaels1978@xxxxxxxxx>]

Public bug reported:

Binary package hint: xserver-xorg-video-intel

Hello,

My system works fine at the default depth of 24. However, if I create a
/etc/X11/xorg.conf with the contents


Section "Screen"
     Identifier "screen 1"
     DefaultDepth 16
EndSection


horizontal lines (looking like static on an old TV) show up when I am using Firefox on some pages. In particular, when I am using my organization's Zimbra webmail system moving the mouse over  message headers in the inbox causes those horizontal lines to appear. This always happens when the mouse is hovering over messages about half-way down the screen (center height).

I also found another situation in which this happens. When I open gnome-
terminal and then run jed to open a file with long lines of text around
the center of the screen, moving the cursor over those center text lines
causes the horizontal corruption to appear, too.

None of this happens if I remove the /etc/X11/xorg.conf (ie, if I run at
24 depth). Unfortunately 24bit depth prevents me from using some higher
resolutions.

Best

lara

ProblemType: Bug
DistroRelease: Ubuntu 10.04
Package: xserver-xorg-video-intel 2:2.9.1-3ubuntu3
ProcVersionSignature: Ubuntu 2.6.32-20.30-generic 2.6.32.11+drm33.2
Uname: Linux 2.6.32-20-generic x86_64
Architecture: amd64
Date: Wed Apr 14 16:14:26 2010
DkmsStatus:
 vboxdrv, 3.1.6, 2.6.32-20-generic, x86_64: installed 
 vboxnetadp, 3.1.6, 2.6.32-20-generic, x86_64: installed 
 vboxnetflt, 3.1.6, 2.6.32-20-generic, x86_64: installed
InstallationMedia: Ubuntu 10.04 "Lucid Lynx" - Beta amd64 (20100406.1)
MachineType: Acer Aspire 1810TZ
ProcCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.32-20-generic root=UUID=aabe5f82-6b13-4361-9592-a8bd2fdc2370 ro quiet splash
ProcEnviron:
 PATH=(custom, user)
 LANG=en_US.utf8
 SHELL=/bin/bash
SourcePackage: xserver-xorg-video-intel
XorgConf:
 Section "Screen"
      Identifier "screen 1"
      DefaultDepth 16
 EndSection
dmi.bios.date: 08/14/2009
dmi.bios.vendor: INSYDE
dmi.bios.version: v0.3115
dmi.board.asset.tag: Base Board Asset Tag
dmi.board.name: Base Board Product Name
dmi.board.vendor: Acer
dmi.board.version: Base Board Version
dmi.chassis.type: 1
dmi.chassis.vendor: Chassis Manufacturer
dmi.chassis.version: Chassis Version
dmi.modalias: dmi:bvnINSYDE:bvrv0.3115:bd08/14/2009:svnAcer:pnAspire1810TZ:pvrv0.3115:rvnAcer:rnBaseBoardProductName:rvrBaseBoardVersion:cvnChassisManufacturer:ct1:cvrChassisVersion:
dmi.product.name: Aspire 1810TZ
dmi.product.version: v0.3115
dmi.sys.vendor: Acer
glxinfo: Error: [Errno 2] No such file or directory
system:
 distro:             Ubuntu
 codename:           lucid
 architecture:       x86_64
 kernel:             2.6.32-20-generic

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


** Tags: amd64 apport-bug lucid

-- 
screen corruption when DefaultDepth = 16
https://bugs.launchpad.net/bugs/563366
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