[Bug 24889] New: monitor native resolutions just show black

[bugzilla-daemon at freedesktop.org]

http://bugs.freedesktop.org/show_bug.cgi?id=24889

           Summary: monitor native resolutions just show black
           Product: xorg
           Version: 7.4
          Platform: x86-64 (AMD64)
        OS/Version: Linux (All)
            Status: NEW
          Severity: critical
          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 Anna S.:
http://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-ati/+bug/473114

[Problem]
Iiyama monitor's native resolution does not display properly.

[Original Description]
After upgrading to Karmic Koala (9.10), my iiyama ProLite E2407HDS monitor does
not display properly at its native resolution of 1920x1080 (16:9). It is
auto-detected correctly, but at native res, the screen is black besides the
toolbars, and some apps display when run, but others do not - for instance
Firefox is entirely blank. The display is only usable at the lower 16:9
resolution of 1280x720. (Background and apps all display properly in this lower
res.)

When scrolling through all possible resolutions, the majority of the
resolutions tested did not display properly. I also checked this page:
https://wiki.ubuntu.com/X/Troubleshooting/Resolution
and was unable to solve the problem. In particular, adding kernel parameter
modeset=0 did not do anything, so I cannot say whether Karmic is missing a
quirk for this monitor or not.

The display worked fine at its native res (1920x1080) in Jaunty Jackalope.

Architecture: amd64
CheckboxSubmission: 3f1404c1e7a16070779964e4cd978722
CheckboxSystem: edda5d4f616ca792bf437989cb597002
Date: Tue Nov  3 19:16:38 2009
DistroRelease: Ubuntu 9.10
Lsusb:
 Bus 002 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 001 Device 002: ID 0bda:0151 Realtek Semiconductor Corp. Mass Stroage
Device
 Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
MachineType: ASUSTek Computer Inc. K8N-E
Package: xorg 1:7.4+3ubuntu7
ProcCmdLine: root=UUID=0f3ca1ef-146b-4fee-ac00-15d710e99dd4 ro quiet splash
modeset=0
ProcEnviron:
 LANG=en_US.UTF-8ProcVersionSignature: Ubuntu 2.6.31-14.48-generic
RelatedPackageVersions:
 xserver-xorg 1:7.4+3ubuntu7
 libgl1-mesa-glx 7.6.0-1ubuntu4
 libdrm2 2.4.14-1ubuntu1
 xserver-xorg-video-intel 2:2.9.0-1ubuntu2
 xserver-xorg-video-ati 1:6.12.99+git20090929.7968e1fb-0ubuntu1
SourcePackage: xorg
Uname: Linux 2.6.31-14-generic x86_64
dmi.bios.date: 06/27/2005
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 1001.013
dmi.board.name: K8N-E
dmi.board.vendor: ASUSTeK Computer INC.
dmi.board.version: Rev 1.xx
dmi.chassis.asset.tag: Asset-1234567890
dmi.chassis.type: 3
dmi.chassis.vendor: Chassis Manufacture
dmi.chassis.version: Chassis Version
dmi.modalias:
dmi:bvnAmericanMegatrendsInc.:bvr1001.013:bd06/27/2005:svnASUSTekComputerInc.:pnK8N-E:pvrSystemVersion:rvnASUSTeKComputerINC.:rnK8N-E:rvrRev1.xx:cvnChassisManufacture:ct3:cvrChassisVersion:
dmi.product.name: K8N-E
dmi.product.version: System Version
dmi.sys.vendor: ASUSTek Computer Inc.
system: architecture:       x86_64kernel:             2.6.31-14-generic


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