[Bug 44755] New: Garbled display on external screen when using 1920x1080 instead of 1920x1200

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=44755

             Bug #: 44755
           Summary: Garbled display on external screen when using
                    1920x1080 instead of 1920x1200
    Classification: Unclassified
           Product: xorg
           Version: git
          Platform: x86-64 (AMD64)
        OS/Version: Linux (All)
            Status: NEW
          Severity: major
          Priority: high
         Component: Driver/Radeon
        AssignedTo: xorg-driver-ati at lists.x.org
        ReportedBy: bryce at canonical.com
         QAContact: xorg-team at lists.x.org


Forwarding this bug from Ubuntu reporter Joe Barnett:
http://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-ati/+bug/915408

[Problem]
i have an external monitor (1920x1200 resolution) that, when set to 1920x1080
resolution (native resolution of laptop display), garbles the screen as seen in
the screenshot below.  The problem doesn't happen using the catalyst driver.

https://bugs.launchpad.net/lightdm-gtk-greeter/+bug/813566/+attachment/2221015/+files/2011-07-20_07-51-28_83.jpg

ProblemType: BugDistroRelease: Ubuntu 11.10
Package: xorg 1:7.6+7ubuntu7
ProcVersionSignature: Ubuntu 3.0.0-15.25-generic 3.0.13
Uname: Linux 3.0.0-15-generic x86_64
.tmp.unity.support.test.0:

ApportVersion: 1.23-0ubuntu4
Architecture: amd64
CompizPlugins:
[core,bailer,detection,composite,opengl,decor,mousepoll,vpswitch,regex,animation,snap,expo,move,compiztoolbox,place,grid,imgpng,gnomecompat,wall,ezoom,workarounds,staticswitcher,resize,fade,unitymtgrabhandles,scale,session,unityshell]
CompositorRunning: None
Date: Thu Jan 12 07:42:25 2012
DistUpgraded: Log time: 2011-07-13 10:07:59.371965
DistroCodename: oneiric
DistroVariant: ubuntu
ExtraDebuggingInterest: Yes, whatever it takes to get this fixed in Ubuntu
GraphicsCard:
ATI Technologies Inc Broadway PRO [Mobility Radeon HD 5800 Series] [1002:68a1]
(prog-if 00 [VGA controller])
Subsystem: Hewlett-Packard Company Device [103c:1522]InstallationMedia: Ubuntu
10.04 "Lucid Lynx" - Release Candidate amd64 (20100419.1)
MachineType: Hewlett-Packard HP ENVY 15 Notebook PC
ProcEnviron:
PATH=(custom, user)
LANG=en_US.UTF-8ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.0.0-15-generic
root=UUID=639dc488-e095-42a4-8c1f-ffb1a9299e1c ro
crashkernel=384M-2G:64M,2G-:128M quiet splash vt.handoff=7SourcePackage: xorg
UpgradeStatus: Upgraded to oneiric on 2011-07-13 (182 days ago)
dmi.bios.date: 04/23/2010
dmi.bios.vendor: Hewlett-Packard
dmi.bios.version: F.26
dmi.board.asset.tag: Base Board Asset Tag
dmi.board.name: 1522
dmi.board.vendor: Hewlett-Packard
dmi.board.version: 36.34
dmi.chassis.type: 10
dmi.chassis.vendor: Hewlett-Packard
dmi.chassis.version: N/A
dmi.modalias:
dmi:bvnHewlett-Packard:bvrF.26:bd04/23/2010:svnHewlett-Packard:pnHPENVY15NotebookPC:pvr048F110000241920001530000:rvnHewlett-Packard:rn1522:rvr36.34:cvnHewlett-Packard:ct10:cvrN/A:
dmi.product.name: HP ENVY 15 Notebook PC
dmi.product.version: 048F110000241920001530000
dmi.sys.vendor: Hewlett-Packard
version.compiz: compiz 1:0.9.6+bzr20110929-0ubuntu6
version.ia32-libs: ia32-libs 20090808ubuntu26
version.libdrm2: libdrm2 2.4.26-1ubuntu1
version.libgl1-mesa-dri: libgl1-mesa-dri 7.11-0ubuntu3
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 7.11-0ubuntu3
version.xserver-xorg: xserver-xorg 1:7.6+7ubuntu7
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.6.0-1ubuntu13
version.xserver-xorg-video-ati: xserver-xorg-video-ati
1:6.14.99~git20110811.g93fc084-0ubuntu1
version.xserver-xorg-video-intel: xserver-xorg-video-intel
2:2.15.901-1ubuntu2.1
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau
1:0.0.16+git20110411+8378443-1

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