[RS690] flickering after update on Jaunty

[lilly-marlene]

Binary package hint: xserver-xorg-video-ati

I used Intrepid with Radeon driver on Toshiba A210 (ATI RS690M [Radeon X1200 Series]) and from time to time had a flickering (with fglrx there was the same problem). Now on Jaunty it was ok (but the card worked slowly) before the update to 1:6.11.0-1ubuntu1 this morning. Now I have the horrible flickering all the time (and the work is very slow too). I tried to reconfigure X but it didn't help (the problem remains).
Thanks for help!

ProblemType: Bug
Architecture: amd64
DistroRelease: Ubuntu 9.04
Package: xserver-xorg-video-ati 1:6.11.0-1ubuntu1
ProcEnviron:
 LANGUAGE=pl_PL:pl:en_GB:en
 LANG=pl_PL.UTF-8
 SHELL=/bin/bash
ProcVersion: Linux version 2.6.28-8-generic (buildd@yellow) (gcc version 4.3.3 (Ubuntu 4.3.3-3ubuntu5) ) #24-Ubuntu SMP Wed Feb 18 20:36:18 UTC 2009

SourcePackage: xserver-xorg-video-ati
Uname: Linux 2.6.28-8-generic x86_64

[lspci]
00:00.0 Host bridge [0600]: ATI Technologies Inc RS690 Host Bridge [1002:7910]
     Subsystem: Toshiba America Info Systems Device [1179:ff10]
01:05.0 VGA compatible controller [0300]: ATI Technologies Inc RS690M [Radeon X1200 Series] [1002:791f]
     Subsystem: Toshiba America Info Systems Device [1179:ff1a]

[agd5f (agd5f)]

Can you attach your xorg log from 6.10.0?

[lilly-marlene (muszka-na-rowerku)]

Binary package hint: xserver-xorg-video-ati

I used Intrepid with Radeon driver on Toshiba A210 (ATI RS690M [Radeon X1200 Series]) and from time to time had a flickering (with fglrx there was the same problem). Now on Jaunty it was ok (but the card worked slowly) before the update to 1:6.11.0-1ubuntu1 this morning. Now I have the horrible flickering all the time (and the work is very slow too). I tried to reconfigure X but it didn't help (the problem remains).
Thanks for help!

ProblemType: Bug
Architecture: amd64
DistroRelease: Ubuntu 9.04
Package: xserver-xorg-video-ati 1:6.11.0-1ubuntu1
ProcEnviron:
 LANGUAGE=pl_PL:pl:en_GB:en
 LANG=pl_PL.UTF-8
 SHELL=/bin/bash
ProcVersion: Linux version 2.6.28-8-generic (buildd@yellow) (gcc version 4.3.3 (Ubuntu 4.3.3-3ubuntu5) ) #24-Ubuntu SMP Wed Feb 18 20:36:18 UTC 2009

SourcePackage: xserver-xorg-video-ati
Uname: Linux 2.6.28-8-generic x86_64

[Bryce Harrington (bryce)]

Hi Lilly,

I've forwarded your bug upstream to https://bugs.freedesktop.org/show_bug.cgi?id=20222 - please subscribe to this bug report in case upstream has further questions or needs you to test something. Thanks ahead of time.

[Bryce Harrington (bryce)]

Btw, one thing to doublecheck is that you don't have any stray -fglrx bits still installed. See https://wiki.ubuntu.com/X/Troubleshooting/FglrxInteferesWithRadeonDriver

[Martin Emrich (emme)]

Hi!

I also have the flickering problem. I am running Ubuntu jaunty AMD64 with an RS690G. Driver version is 6.11.0

I actually have two different kinds of flickering. The more annoying is that sometimes the screen goes black for a moment, and returns after that. xrandr offers two refresh rates for my DVI display (60.3*+ Hz and 59.9Hz, but I cannot switch to 59.9), and the display could be a little picky about the refresh rate.

The other flickering only concerns the mouse pointer, and only if I move it to certain positions on the X axis.

Attached is my X server log.

Regards

Martin

[Martin Emrich (emme)]

Created an attachment (id=23685)
X server log

My X server log

[agd5f (agd5f)]

please attach your log directly rather than zipping it next time. In your case the xserver has selected a clone mode for your HMDI monitor that matches your VGA port. the digital display may not like the timing. since the monitors are cloned, you'll have to select a different crtc to drive them at different timings. xrandr would ideally be smart enough to do this itself.

if you want the native mode:
xrandr --output HDMI-0 --crtc 1 --mode 1680x1050
or if you want 1280x1024:
xrandr --output HDMI-0 --crtc 1 --mode 1280x1024 --rate 59.9

[Martin Emrich (emme)]

Also running jaunty (AMD64). I added my comment to the upstream bug: https://bugs.freedesktop.org/show_bug.cgi?id=20222#c2 . I also looked for remains of any fglrx installation, but found none.

[Martin Emrich (emme)]

Hi!

I do not use clone mode, but dual-head (DVI display on the left, VGA display on the right). I actually was able to switch to the 59.9Hz modeline using "xrandr --output HDMI-0 --mode 0x5d" (From the list that "xrandr --verbose" prints), but the flickering stays. The flickering only affects the DVI display, the VGA display stays stable all the time.

Also note that the display is not connected via HDMI, but DVI (only xrandr calls it HDMI-0, although the board has a HDMI connector, too).

Sorry for gzipping the log, I just intended to save space.

For some time, I used the fglrx driver, which does not exhibit the flickering.

I'd like to test some newer version of the driver. If I check it out and install it, it goes to /usr/local. How do I tell the X server to look there instead of /usr?

Ciao

Martin

[Martin Emrich (emme)]

HI!

I just found Bug #310864, which even better describes my problem. If this bug here is different, just disregard my comments :)

[JeSTeR7 (cblocker)]

Using ATI Mobility x1200 on Jaunty AMD64 and have the exact same results. This happens whether compiz is on or completely disabled.

[Freedesktop-dirtygreek (freedesktop-dirtygreek)]

I also have the flickering problem. Jaunty RC, Toshiba A215 (ATI RS690M [Radeon X1200 Series]

[agd5f (agd5f)]

I think this should be fixed with this commit:
24e4b73b4fbbb2c790e6120ede3caaa4e7e58359

please try git master and report back.

[Martin Emrich (emme)]

Hi!

I just installed the git head version using the instructions from http://www.x.org/wiki/radeon. The flickering got much worse, it is now actually constantly black, and my screen just says "Frequency out of range 65kHz/60Hz, please adjust to 1680x1050 with 60Hz".

From time to time, my desktop comes through for a blink of an eye, and I can see snow (just like overclocked or bad video RAM).

[Martin Emrich (emme)]

Created an attachment (id=25133)
Xorg log with radeon git head drivers.

[Martin Wimmer (martin-wimmer)]

I also have the same problem on my HP Compaq 6715b with Jaunty AMD64.
Screen flickers very often.
I already deactivated compiz. It got a little better, but not much.

I uninstalled fglrx following the instructions https://wiki.ubuntu.com/X/Troubleshooting/FglrxInteferesWithRadeonDriver but it didn't help

[Radek V. (dhp)]

Hi Martin

I have same model of notebook as you. I have upgrated Kubuntu to Jaunty and X-windows have crashed. Did you find the solutions of problems with drivers for this notebook?

Could you help me how to make my system functional?

Thanks a lot

Radek

[Martin Emrich (emme)]

Hi Radek!

It's not a notebook, but a desktop. This bug report is not about X.Org crashing, but about a flickering screen on DVI/LVDS-connected displays. If your X server does no longer work after moving to jaunty, it is probably because you still have the fglrx driver configured (which no longer supports RS690 since driver version 9.4). Switching from fglrx to radeon/radeonhd should be documented on the Ubuntu forums or the wiki.

Ciao

Martin

[sww5523 (peter-krneki)]

Confirming this bug on HP 6715b. Fresh install Ubuntu 9.04 amd64. No fglrx anywhere, default install.

[Phius (phiuss)]

Confirming bug on notebook Compal Jaw 91 with radeon x1200 series + amd64. I have a friend that bought the same model of notebook, also use ubuntu and also have the same problem. Both with fresh Ubuntu 9.04 install.

[totanlinh (totanlinh)]

it happened my notebook toshiba A215, i try to install the ATI driver 9.4 and try to config so many difference ways but no luck, so tired, guys!

[Rafael Proença (cypherbios)]

I am having the same problem on my notebook (Gateway W350a) with a ATI graphic card (ATI Technologies Inc RS690M [Radeon X1200 Series]).
I have tried with the drivers "ati", "radeon", "radeonhd" and "fglrx", none of which worked properly (if worked at all).
I have a fresh Ubuntu 9.04 installation.

[Jens Janssen (jayjay)]

Everybody with flickering problem should also read https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-ati/+bug/351291.

Problem solved by installing an updated version of xserver-xorg-video-ati (1:6.12.2.99+git20090504.da58e351-0ubuntu0tormod) from https://launchpad.net/~tormodvolden/+archive/ppa.

[Jens Janssen (jayjay)]

Sorry, i meant to say xserver-xorg-video-radeon which can be found under xserver-xorg-video-ati.

[Martin Emrich (emme)]

It looks like two different symptoms, which _might_ be two different bugs:

1. My bug, which seems to be Bug #310864: Flickering on DVI-connected displays, which sometimes gets worse at higher CPU load. With "flickering", I mean the DVI screen actually going blank for guessed 100-300ms. I experience it on the desktop chipset (some people on plug-in graphics cards), even with -ati GIT head.

2. The Bug #351291 Jens mentioned: Flickering under low CPU load. I read the comments, and everybody there seems to have the problem on the mobile chipset (RS690M).

[Jens Janssen (jayjay)]

Yes, you are right. But flickering (CPU related) appears even on a X1300 Mobility.

In git you can find several bugfixes due to the flickering/blanking problem (http://cgit.freedesktop.org/xorg/driver/xf86-video-ati/log). But I don't know which fix handle your problem. Give it a try.

[Phius (phiuss)]

As Jens Janssen posted, installing the updated version of xserver-xorg-video-radeon (that's under xserver-xorg-video-ati) found on https://launchpad.net/~tormodvolden/+archive/ppa solved my problem.

Thank you Jens!

Package I've downloaded is this: https://launchpad.net/~tormodvolden/+archive/ppa/+files/xserver-xorg-video-radeon_6.12.2.99+git20090504.da58e351-0ubuntu0tormod_i386.deb

[agd5f (agd5f)]

Please try with xf86-video-ati git master. This is probably a dup of bug 22229.

[Tormod Volden (tormodvolden)]

Please try the -ati/-radeon packages for Jaunty in https://launchpad.net/~tormodvolden/+archive/ppa to see if the latest upstream fix helps here. Since it seems like many issues have been mentioned in this bug report, I am especially interested in feedback from the original reporter, lilly-marlene.

[Martin Emrich (emme)]

Created an attachment (id=26761)
Register dumps with -ati and radeonhd

As a "wrap-up" of my conversation on #radeon two days ago, here is a dump of the IGP registers.

I also made a short video of how the flickering looks (AVI/MPEG4/no sound):

http://www.emmes-world.de/hacking/flicker-rs690.avi

Ciao

Martin

[saliheenm (saliheenm)]

ATI X1250 Flickering Bug for Jaunty

I am using HP6715B which have a ATI X1250 video card. Which I was using Intrepid 8.10 AMD64 which worked fine with restricted drivers. Then I tried Jaunty AMD64 as soon as it released which caused me a nightmare of flickering. Installing gdesklets made my flicker unbearable. I tried all the trip and trick in the world which caused me to reinstall Jaunty several times. The fact is I love Jaunty which I don't want to give up.

After I followed many techniques of internet the out come was confusing and exhausting. But all the knowledge which I gone through this painful experience came up with pleasing simple steps worked for me.

This is how you do

Before everything
1.backup your data
2.make sure you connect internet through RJ45 cable. Because in case of GUI failure your wireless will not work. And would not be easy to fix the GUI.

Then,
3.Open the terminal window (Application → Accessories → Terminal)
4.Back up your xorg.conf file for future crisis
sudo cp /etc/X11/xorg.conf /etc/X11/xorg.conf.bak
5.Edit xorg.conf file
sudo gedit /etc/X11/xorg.conf
Delete everything in between Section “Device” and EndSection
Section "Device"
xxxxxxxxxx “xxxxxxx”
EndSection
 Add the line which look like as follows
  Section "Device"
    Identifier "radeonhd"
  EndSection
6.Save the file and exit geditor
7.remove all existing ati driver. In terminal fire the following command.
sudo apt-get purge xserver-xorg-video-radeon xserver-xorg-video-ati
exit the terminal window
8.Open Synaptic Package Manager and search “ati” and scroll and install the following package
xserver-xorg-video-radeonhd 1.2.4-2
9.Reboot the system

joy oh joy that how you do it

if your GUI crashed after this follow the steps below to restore:
log into text mode
1.restore your xorg.conf which we back up before
sudo cp /etc/X11/xorg.conf.bak /etc/X11/xorg.conf
2.install the default ati drivers
sudo apt-get install xserver-xorg-video-radeon xserver-xorg-video-ati

any commence or question contact me <email address hidden>

[Ian McMichael (ian-sigma-uk)]

I also have an HP Compaq 6715b with a Radeon X1200 RS690M integrated card, which suffers from the flickering issue with Jaunty out of the box.

Following the instructions here I've downloaded and installed https://launchpad.net/~tormodvolden/+archive/ppa/+files/xserver-xorg-video-radeon_6.12.99+git20090911.ac853ca0-0ubuntu0tormod_i386.deb. Unfortunately the file /usr/share/xserver-xorg/pci/radeon.ids appears to be missing from the package. When X starts it is unable to identify the card as a radeon and the fallback VESA driver fails on this machine too.

Should the list of PCI ids be included in this package or is there another I can find them in?

[Jens Janssen (jayjay)]

Try xorg-edgers. The current release is stable. There you must install the whole ppa in contrast to Tormod Volden's ppa.

Sometimes a package could be defective. It's bleeding edge.

[Tormod Volden (tormodvolden)]

saliheenm, I wonder if that helped just because DRI is disabled with radeonhd. Try Option "DRI" "off" with the -radeon/-ati driver.

Ian, this is possible, but you can work around it by making a minimal xorg.conf where you specify the "ati" driver.

What Jens said :) I provide the packages as-is and they are sometimes hardly tested.

[Ian McMichael (ian-sigma-uk)]

I ended up grabbing a /usr/share/xserver-xorg/pci/radeon.ids from the official Jaunty package and using it in combination with the package from Tormod's PPA. All working fine now with no flickering. :-)

[Martin Emrich (emme)]

Hi!

The flickering is still there (current ubuntu karmic packages). I am on vacation, and thus have some time this and next week to do some git-testing :)

Are the instructions on http://www.x.org/wiki/radeon still valid, or were there changes due to the switch to KMS? If this bug is in the modeswitching part, will I have to patch the kernel?

[agd5f (agd5f)]

Please try:
Option "DisplayPriority" "HIGH"
With latest git with kms disabled.

[Martin Emrich (emme)]

I'm on git head now, and set "DisplayPriority" "HIGH". The blackouts remain. If you tell me how, I could do some sniffing/register dumping/whatever on Windows XP x64, if that would help...

[agd5f (agd5f)]

can you try with ati from git master? Specifically commit 66b194a78c470cb3978f310828dd96c3f3e96944.

[Martin Emrich (emme)]

Sorry for the delay, I had to find some time to connect the RS690-based box again and do the testing. I installed the latest git head for dri2proto,drm,macros,mesa,pthread-stubs and xf86-video-ati, and restarted the box with radeon.modeset=0. The flickering actually got worse (just as with the standard ddx and KMS on Ubuntu 9.10; Now also the lower resolutions flicker on the DVI screen.

I'll try http://bugs.freedesktop.org/show_bug.cgi?id=19960#c29 next, and report back there.

[Martin Emrich (emme)]

I tried all 8 pll_flags values, none of them gave me a stable picture. Here are my notes just copied from the source file:

----
  /* (1) better than nothing, but still 1 flicker every 5-30s */
    //pll_flags = RADEON_PLL_PREFER_LOW_REF_DIV;

    /* (2) Way better than the first one, the first flicker came
     * about 15 minutes after starting the X server. Then
     * about one per 30-60s. */
    //pll_flags = RADEON_PLL_PREFER_HIGH_REF_DIV;

    /* (3) Flickering starts right away. Similar to Nr. 2 otherwise.
     * flickers every 15-120s */
    //pll_flags = RADEON_PLL_PREFER_LOW_FB_DIV;

    /* (4) Quite bad, just as without pll_flags being set here.
     * Flickers every 2-15s. */
    //pll_flags = RADEON_PLL_PREFER_HIGH_FB_DIV;

    /* (5) Just as Nr. 3 */
    //pll_flags = RADEON_PLL_PREFER_LOW_POST_DIV;

    /* (6) Similar to Nr. 2 */
    //pll_flags = RADEON_PLL_PREFER_HIGH_POST_DIV;

    /* (7) Worst of all: From time to time, the display OSD even shows
     * an out-of-sync warning. */
    //pll_flags = RADEON_PLL_USE_FRAC_FB_DIV;

    /* (8) Similar to Nr. 3 */
    //pll_flags = RADEON_PLL_PREFER_CLOSEST_LOWER;
----

Alex, what should I do? I feel the growing urge to buy another graphics card... Or is there a real chance that the problem can be fixed?

[agd5f (agd5f)]

Does using either of these in conjunction with the others help?
RADEON_PLL_USE_FRAC_FB_DIV
RADEON_PLL_PREFER_CLOSEST_LOWER

E.g.,
pll_flags = RADEON_PLL_PREFER_LOW_REF_DIV | RADEON_PLL_USE_FRAC_FB_DIV;
or,
pll_flags = RADEON_PLL_PREFER_LOW_REF_DIV | RADEON_PLL_USE_FRAC_FB_DIV | RADEON_PLL_PREFER_CLOSEST_LOWER;
etc.

[agd5f (agd5f)]

I've added a new pll algo to xf86-video-ati git master. Does that help?

[cement_head (andorjkiss)]

I also have this bug on an HP6910p with external monitor connected. Will try above solutions and report back.

- CH

[cement_head (andorjkiss)]

HP6910p (Mobility Radeon X2300 chipset, M64; RV535).

Flicker is there with the ati/radeon driver, but greatly reduced using the <Option "DisplayPriority" "HIGH"> addition to my xorg.conf file.

Using the drivers from: https://launchpad.net/~ubuntu-x-swat/+archive/x-updates

xserver-xorg-video-radeon 1:6.12.99+git20091125.0061c4db0ubuntu0tormod2

CANNOT use radeonhd drivers - causes a kernel lock-up/X-freeze -> requires a hard reboot.

Will try the XORG Edgers Repo and post back.

[cement_head (andorjkiss)]

Using the XORG Edgers PPA, I can't get past the login screen...I'm a "old lady". But this Mobility Radeon Chipset (X2300) is not the greatest. The regular radeon driver works very well for the most part.

[Bryce Harrington (bryce)]

[This is an automatic notification.]

Hi lilly-marlene,

This bug was reported against an earlier version of Ubuntu, can you
test if it still occurs on Lucid?

Please note we also provide technical support for older versions of
Ubuntu, but not in the bug tracker. Instead, to raise the issue through
normal support channels, please see:

    http://www.ubuntu.com/support

If you are the original reporter and can still reproduce the issue on
Lucid, please run the following command to refresh the report:

  apport-collect 331522

If you are not the original reporter, please file a new bug report, so
we can work with you as the original reporter instead (you can reference
bug 331522 in your report if you think it may be related):

  ubuntu-bug xorg

If by chance you can no longer reproduce the issue on Lucid or if you
feel it is no longer relevant, please mark the bug report 'Fix Released'
or 'Invalid' as appropriate, at the following URL:

  https://bugs.launchpad.net/ubuntu/+bug/331522

[Roland Hughes (original-seasoned-geek)]

The problem was so severe I swapped video cards, and thus could not reproduce
now if I wanted to.

On May 5, 2010 at 8:11 PM Bryce Harrington <email address hidden> wrote:

> [This is an automatic notification.]
>
> Hi lilly-marlene,
>
> This bug was reported against an earlier version of Ubuntu, can you
> test if it still occurs on Lucid?
>
> Please note we also provide technical support for older versions of
> Ubuntu, but not in the bug tracker.  Instead, to raise the issue through
> normal support channels, please see:
>
>     http://www.ubuntu.com/support
>
>
> If you are the original reporter and can still reproduce the issue on
> Lucid, please run the following command to refresh the report:
>
>   apport-collect 331522
>
> If you are not the original reporter, please file a new bug report, so
> we can work with you as the original reporter instead (you can reference
> bug 331522 in your report if you think it may be related):
>
>   ubuntu-bug xorg
>
> If by chance you can no longer reproduce the issue on Lucid or if you
> feel it is no longer relevant, please mark the bug report 'Fix Released'
> or 'Invalid' as appropriate, at the following URL:
>
>   https://bugs.launchpad.net/ubuntu/+bug/331522
>
>
> ** Changed in: xserver-xorg-video-ati (Ubuntu)
>        Status: Triaged => Incomplete
>
> ** Tags added: needs-retested-on-lucid-by-june
>
> --
> [RS690] flickering after update on Jaunty
> https://bugs.launchpad.net/bugs/331522
> You received this bug notification because you are a direct subscriber
> of the bug.
>
> Status in X.org XServer - ATI gfx chipset driver: Confirmed
> Status in “xserver-xorg-video-ati” package in Ubuntu: Incomplete
>
> Bug description:
> Binary package hint: xserver-xorg-video-ati
>
> I used Intrepid with Radeon driver on Toshiba A210 (ATI RS690M [Radeon X1200
> Series]) and from time to time had a flickering (with fglrx there was the same
> problem). Now on Jaunty it was ok (but the card worked slowly) before the
> update to 1:6.11.0-1ubuntu1 this morning. Now I have the horrible flickering
> all the time (and the work is very slow too). I tried to reconfigure X but it
> didn't help (the problem remains).
> Thanks for help!
>
> ProblemType: Bug
> Architecture: amd64
> DistroRelease: Ubuntu 9.04
> Package: xserver-xorg-video-ati 1:6.11.0-1ubuntu1
> ProcEnviron:
>  LANGUAGE=pl_PL:pl:en_GB:en
>  LANG=pl_PL.UTF-8
>  SHELL=/bin/bash
> ProcVersion: Linux version 2.6.28-8-generic (buildd@yellow) (gcc version 4.3.3
> (Ubuntu 4.3.3-3ubuntu5) ) #24-Ubuntu SMP Wed Feb 18 20:36:18 UTC 2009
>
> SourcePackage: xserver-xorg-video-ati
> Uname: Linux 2.6.28-8-generic x86_64
>
> [lspci]
> 00:00.0 Host bridge [0600]: ATI Technologies Inc RS690 Host Bridge [1002:7910]
>             Subsystem: Toshiba America Info Systems Device [1179:ff10]
> 01:05.0 VGA compatible controller [0300]: ATI Technologies Inc RS690M [Radeon
> X1200 Series] [1002:791f]
>             Subsystem: Toshiba America Info Systems Device [1179:ff1a]
>
>
> To unsubscribe from this bug, go to:
> https://bugs.launchpad.net/xserver-xorg-driver-ati/+bug/331522/+subscribe

Roland Hughes, President
Logikal Solutions
(630)-205-1593  - cell
http://www.theminimumyou...

[Martin Wimmer (martin-wimmer)]

Hi Bryce!

Actually, I still have my HP Compaq 6715b with the Radeon X1250 card

On karmic it worked well, now on lucid it also works acceptable, but with small problems:
- Before the GDM login, garbage becomes visible on the screen (This garbage then fades to the gdm login background)
- Once I used fast user switching two times in a short period of time. After the second time, the screen started to flicker. Changing the resolution didn't help. When I wanted to logout (so I could go to the other profile to save the data and reboot) the screen became blank, and i had to use the power switch to shutdown the machine. After the reboot everything was back to normal.

So I'm not sure if this is actually the same bug, maybe you can provide directions (I'm also not sure if this bug is easily reproducible)

[W3ird_N3rd (w3ird-n3rd)]

Hi Martin Wimmer,

Similar problems here. MSI K9AG Neo2-Digital with RS690 running Lucid. I've seen the screen flickering on startup, when starting an application and my brother saw it the screen going blank and had to reset the computer.

If there is no workaround for this I'm going to have to put another videocard in that box.

[Mailme667 (mailme667)]

I had posted this at Launchpad #331522 already but it might be a good idea to have it here as well.

I've installed Ubuntu 10.04 on an MSI K9AG Neo2-Digital with 690G chipset and the screen flickers here as well. I can't really describe it well, it feels like the vsync gets lost or something. The display (Iiyama E430) is connected using VGA.

I've seen it happening on startup and when starting an application, will test some more soon.

[Mailme667 (mailme667)]

Created an attachment (id=35874)
dmesg info and xorg.log

dmesg output and Xorg.log with all default stuff in the attachment. With that I get the flickering.

I've taken another look and it's more like the screen flickers between black and normal display when it flickers. No vsync thing as I mentioned earlier.

I've added radeon.modeset=0 and it looks like this has removed the flickering entirely, so I'm happy (I don't really need KMS on that box).

The radeonhd driver (from Ubuntu 10.04 lucid repositories, same place where I got radeon) also flickers, but a lot less.

[agd5f (agd5f)]

(In reply to comment #21)
> I've added radeon.modeset=0 and it looks like this has removed the flickering
> entirely, so I'm happy (I don't really need KMS on that box).

Can you attach the xorg log with kms disabled? Can you also attach a register dump from kms and ums as root? Use avivotool, available here:
http://cgit.freedesktop.org/~airlied/radeontool/
I believe ubuntu packages it as well.

boot ums (radeon.modeset=0):
avivotool regs all > ums.regs
boot kms:
avivotool regs all > kms.regs
and attach the files here.

[Mailme667 (mailme667)]

Created an attachment (id=35886)
Xorg log using UMS

In the attachment you find the Xorg.log when using UMS.

I cannot give you the register dumps. When I enter that command from a gnome-terminal the system freezes and the screen shows some strange purple stuff. When I enter that command at tty1 the system freezes and the screen goes black. After restarting the computer I find out no file has been written (or a 0 byte file which is no use).

[W3ird_N3rd (w3ird-n3rd)]

Hi Martin Wimmer,

What appears to have worked for me is to start with "radeon.modeset=0". This disables KMS. Run sudo gedit /etc/default/grub and add it after quiet splash. (so make it "quiet splash radeon.modeset=0"). Then run sudo update-grub.

[Mailme667 (mailme667)]

I you (or anyone else) has a suggestion to sucessfully make the register dump I don't mind hearing about it.