[Bug 27644] New: radeon KMS causes corrupt VGA output on X1400

[Bug 27644] New: radeon KMS causes corrupt VGA output on X1400

[bugzilla-daemon]

https://bugs.freedesktop.org/show_bug.cgi?id=27644

           Summary: radeon KMS causes corrupt VGA output on X1400
           Product: DRI
           Version: unspecified
          Platform: x86 (IA32)
        OS/Version: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: DRM/Radeon
        AssignedTo: dri-devel@lists.freedesktop.org
        ReportedBy: sastraxi@gmail.com


(note first that this is connected to an Ubuntu bug report; take a look for
some potentially-helpful logs:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/562138)

Booting up the latest 10.04 daily live-cd of Ubuntu, the VGA output is
unusable. It looks like an incorrect frequency, and the screen size is wrong
(it's too narrow for the resolution). The wavering/out-of-phase-ness is so bad
that it's impossible to read. This happens on both the X console and X11, and
goes away when I use the internal laptop LCD instead (LVDS). If I use both
screens in a mirror or extend mode, the same problems occur. So, this led me to
believe that the problem might be with Kernel Mode Setting (KMS).

I added the options:
"radeon.modeset=0 vga=771"
to the livecd and, voila, no more corruption. Everything works again, and I can
use my big LCD via VGA!

I've attached as much information as I can; I can also show a video of the
corruption. I had Ubuntu 8.10 on my computer previously; it's a Dell Inspiron
6400 with Mobility X1400 graphics from ati. I'm using the April 13th Daily
LiveCD here, but the corruption was evident at least with the latest Beta
livecd.

Let me know if I can give any more information!

ProblemType: Bug
DistroRelease: Ubuntu 10.04
Package: xorg 1:7.5+5ubuntu1
ProcVersionSignature: Ubuntu 2.6.32-20.30-generic 2.6.32.11+drm33.2
Uname: Linux 2.6.32-20-generic i686
Architecture: i386
Date: Tue Apr 13 04:48:04 2010
LiveMediaBuild: Ubuntu 10.04 "Lucid Lynx" - Alpha i386 (20100413)
MachineType: Dell Inc. MM061
ProcCmdLine: initrd=/ubninit file=/cdrom/preseed/hostname.seed boot=casper
quiet radeon.modeset=0 vga=771 BOOT_IMAGE=/ubnkern
ProcEnviron:
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: xorg
Symptom: display
dmi.bios.date: 04/20/2007
dmi.bios.vendor: Dell Inc.
dmi.bios.version: A15
dmi.board.name: 0XD720
dmi.board.vendor: Dell Inc.
dmi.chassis.type: 8
dmi.chassis.vendor: Dell Inc.
dmi.modalias:
dmi:bvnDellInc.:bvrA15:bd04/20/2007:svnDellInc.:pnMM061:pvr:rvnDellInc.:rn0XD720:rvr:cvnDellInc.:ct8:cvr:
dmi.product.name: MM061
dmi.sys.vendor: Dell Inc.
system:
 distro: Ubuntu
 codename: lucid
 architecture: i686
 kernel: 2.6.32-20-generic

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[Bug 27644] radeon KMS causes corrupt VGA output on X1400

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https://bugs.freedesktop.org/show_bug.cgi?id=27644

--- Comment #1 from Alex Deucher <agd5f@yahoo.com> 2010-04-14 11:59:07 PDT ---
does radeon.new_pll=0 also fix the problem?

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[Bug 27644] radeon KMS causes corrupt VGA output on X1400

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https://bugs.freedesktop.org/show_bug.cgi?id=27644

--- Comment #2 from Cameron Gorrie <sastraxi@gmail.com> 2010-04-14 12:26:43 PDT ---
(In reply to comment #1)
> does radeon.new_pll=0 also fix the problem?

Alex, it does not. I replaced "radeon.modeset=0 vga=771" with
"radeon.new_pll=0".

Cam

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[Bug 27644] radeon KMS causes corrupt VGA output on X1400

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https://bugs.freedesktop.org/show_bug.cgi?id=27644

--- Comment #3 from Alex Deucher <agd5f@yahoo.com> 2010-04-14 12:32:57 PDT ---
Please try dumping the registers when using kms and ums using avivotool as
root:
avivotool regs all > ums.regs
avivotool regs all > kms.regs
And attach the dumps here.  Please specify what versions of xf86-video-ati and
kernel you used to make the dumps. avivotool is part of radeontool:
http://cgit.freedesktop.org/~airlied/radeontool

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[Bug 27644] radeon KMS causes corrupt VGA output on X1400

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https://bugs.freedesktop.org/show_bug.cgi?id=27644

--- Comment #4 from Cameron Gorrie <sastraxi@gmail.com> 2010-04-14 22:49:24 PDT ---
Created an attachment (id=35049)
 --> (https://bugs.freedesktop.org/attachment.cgi?id=35049)
avivotool regs all output "UMS"

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[Bug 27644] radeon KMS causes corrupt VGA output on X1400

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https://bugs.freedesktop.org/show_bug.cgi?id=27644

--- Comment #5 from Cameron Gorrie <sastraxi@gmail.com> 2010-04-14 22:49:43 PDT ---
Created an attachment (id=35050)
 --> (https://bugs.freedesktop.org/attachment.cgi?id=35050)
avivotool regs all output "KMS"

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[Bug 27644] radeon KMS causes corrupt VGA output on X1400

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https://bugs.freedesktop.org/show_bug.cgi?id=27644

--- Comment #6 from Cameron Gorrie <sastraxi@gmail.com> 2010-04-14 22:49:49 PDT ---
Here you are!

$ uname -a
Linux gibraltar 2.6.32-20-generic #30-Ubuntu SMP Mon Apr 12 15:19:41 UTC 2010
i686 GNU/Linux 

$ dpkg -l xserver-xorg-video-ati
ii  xserver-xorg-video-ati 1:6.13.0-1ubuntu2 X.Org X server -- AMD/ATI display
driver wrapper

And attached are the ums/kms files. I had to run avivotool a few
times/reboot/re-make in order to get it to output anything, if that matters.

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[Bug 27644] radeon KMS causes corrupt VGA output on X1400

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https://bugs.freedesktop.org/show_bug.cgi?id=27644

--- Comment #7 from willjcroz <willjcroz@yahoo.co.uk> 2010-04-15 02:11:27 PDT ---
Hi, same problem here, on Thinkpad T60 on external VGA output and x86_64 Ubuntu
OS (10.04 Beta2).

$ uname -a
Linux t60 2.6.32-20-generic #30-Ubuntu SMP Mon Apr 12 15:20:57 UTC 2010 x86_64
GNU/Linux

$ dpkg -l xserver-xorg-video-ati
ii  xserver-xorg-video-ati  1:6.13.0-1ubuntu2       X.Org X server -- AMD/ATI
display driver wrapper

heres my UMS and KMS outputs in case it helps...

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[Bug 27644] radeon KMS causes corrupt VGA output on X1400

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https://bugs.freedesktop.org/show_bug.cgi?id=27644

--- Comment #8 from willjcroz <willjcroz@yahoo.co.uk> 2010-04-15 02:14:17 PDT ---
Created an attachment (id=35053)
 --> (https://bugs.freedesktop.org/attachment.cgi?id=35053)
avitool regs all > ums.regs

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[Bug 27644] radeon KMS causes corrupt VGA output on X1400

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https://bugs.freedesktop.org/show_bug.cgi?id=27644

--- Comment #9 from willjcroz <willjcroz@yahoo.co.uk> 2010-04-15 02:15:00 PDT ---
Created an attachment (id=35054)
 --> (https://bugs.freedesktop.org/attachment.cgi?id=35054)
avitool regs all > kms.regs

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[Bug 27644] radeon KMS causes corrupt VGA output on X1400

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https://bugs.freedesktop.org/show_bug.cgi?id=27644

--- Comment #10 from Cameron Gorrie <sastraxi@gmail.com> 2010-05-06 07:06:15 PDT ---
According to the Ubuntu bug

https://bugs.launchpad.net/ubuntu/+source/linux/+bug/541834

this is fixed in 2.6.34-rc3. I can say at least that this fix worked for me;
I'm now using KMS with my LCD!

Cam

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[Bug 27644] radeon KMS causes corrupt VGA output on X1400

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https://bugs.freedesktop.org/show_bug.cgi?id=27644

--- Comment #11 from Oliver Joos <oliver.joos@freenet.ch> 2011-01-27 11:03:36 PST ---
Seems I have the same problem with an ATI X600 (chipset RV380) in my laptop HP
Compaq nx8220. Same symptoms and the kernel parameters "radeon.modeset=0
vga=771" also fixed it finally, whereas "radeon.new_pll=0" alone did not help
(another dozen of googled suggestions failed too. So many thanks for this
hint!)

My graphics adapter:
01:00.0 VGA compatible controller: ATI Technologies Inc M24 1P [Radeon Mobility
X600]

I use Ubuntu Lucid with kernel 2.6.35-23 and disabled KMS ever since, because
with KMS overlay video playback is not possible anymore and textured video
playback shows artifact (looks like a diagonal edge of an OpenGL triangle not
drawn correctly synchronized with vsync. But thats another bug...).

If I can help with further data or tests, then please just ask.

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[Bug 27644] radeon KMS causes corrupt VGA output on X1400

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https://bugs.freedesktop.org/show_bug.cgi?id=27644

Christopher M. Penalver <christopher.m.penalver@gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|---                         |INVALID
                 CC|                            |christopher.m.penalver@gmai
                   |                            |l.com

--- Comment #12 from Christopher M. Penalver <christopher.m.penalver@gmail.com> ---
Fix released downstream.

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