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[Fanf <655200@xxxxxxxxxxxxxxxxxx>]

Public bug reported:

Binary package hint: xorg

Hello,

Summary
------------

Using ATI radeon driver leads to a blank screen when my screen is connected with DVI.
RadeonHD driver used to work perfectly until I switch to Ubuntu 10.10 where it is no more supported. 

Configuration
-------------------

% lspci
01:00.0 VGA compatible controller: ATI Technologies Inc RV610 video device [Radeon HD 2400 PRO]
...

It's a card with a VGA and a DVI output.

My monitor is a Samsung SyncMaster 2232bw. Its native resolution is
1680x1050

Details
----------
I just switch to 10.10 and discovered that the radeonhd driver is no more supported.
Problem: the "radeon" (or "ati", as it's the same) driver does not work well for me:
- if I use the DVI output, I just get a blank screen
- with the VGA output, I get a really *really* bad image, difficult to describe: its blurred, or with kinds of waves, as if there was a lot of interferences. It's almost not usable at 1680x1050, better at lower resolutions

Changing from KMS with radeon.modeset=0 has no consequence.

Trying to not use EDID information (Option "IgnoreEDID" "true") leads to
same result.

Fglrx does not work either, at 1680x1050 I get a "flashing" image
(screen goes blank every 2 seconds or so), and at lower resolution the
screen is flashing (but less frequently)

"Vesa" driver works perfectly, both on VGA and DVI, but I can not use
1680x1050 with them, only 1280x1024 (what is expected with vesa driver).

It uses to work perfectly at 1680x1050 with radeonhd driver.

If I switch my screen for my TV (connected in DVI) with the radeon
driver, I get an image in full HD.

So, it seems that there is something wrong with either my card, the
screen, or the combination of the two. But for now, with Ubuntu 10.10, I
have no solution to have a clean display at my screen native resolution.

Initially posted here http://ubuntuforums.org/showthread.php?t=1587313

ProblemType: Bug
DistroRelease: Ubuntu 10.10
Package: xorg 1:7.5+6ubuntu3
ProcVersionSignature: Ubuntu 2.6.35-22.33-generic-pae 2.6.35.4
Uname: Linux 2.6.35-22-generic-pae i686
NonfreeKernelModules: fglrx
Architecture: i386
Date: Tue Oct  5 17:26:43 2010
MachineType: System manufacturer P5K
ProcCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.35-22-generic-pae root=UUID=969ffa96-e189-4d3c-8b05-14f43aa68841 ro acpi_enforce_resources=lax nosplash nomodeset radeon.modeset=0
ProcEnviron:
 LANGUAGE=fr_FR:fr:en_GB:en
 PATH=(custom, user)
 LANG=fr_FR.utf8
 SHELL=/bin/zsh
SourcePackage: xorg
Symptom: display
XorgConf: Error: [Errno 13] Permission non accordée: '/etc/X11/xorg.conf'
dmi.bios.date: 07/03/2007
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 0603
dmi.board.asset.tag: To Be Filled By O.E.M.
dmi.board.name: P5K
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.:bvr0603:bd07/03/2007:svnSystemmanufacturer:pnP5K:pvrSystemVersion:rvnASUSTeKComputerINC.:rnP5K:rvrRev1.xx:cvnChassisManufacture:ct3:cvrChassisVersion:
dmi.product.name: P5K
dmi.product.version: System Version
dmi.sys.vendor: System manufacturer
glxinfo: Error: command ['glxinfo'] failed with exit code -11:
system:
 distro:             Ubuntu
 codename:           maverick
 architecture:       i686
 kernel:             2.6.35-22-generic-pae

** Affects: xorg (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: apport-bug i386 maverick

-- 
Radeon driver + DVI + Syncmaster 2232bw = blank screen
https://bugs.launchpad.net/bugs/655200
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