From: Matteo Riva on
On Sat, Jan 30, 2010 at 11:29 PM, Wolodja Wentland
<wentland(a)cl.uni-heidelberg.de> wrote:

> I use the radeonhd driver and am very happy with its performance. I ran
> into the same behaviour you described some time ago and fixed it by using EXA
> as acceleration method. The applicable part from my xorg.conf is:
>
> --- snip ---
> Section "Device"
>        Driver      "radeonhd"
>        Option      "DRI"   "on"
>        Option      "AccelMethod" "EXA"
>        ...
> EndSection
> --- snip ---

Meh, when I read this message I instantly modified my xorg.conf
*knowing* this was the solution... but sadly it still made no difference
:(

Can you post your full xorg.conf in case I'm missing some other required
part? Or a log of a correctly working xorg system.

Thanks for your help.


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From: tv.debian on
Matteo Riva wrote:
> On Sat, Jan 30, 2010 at 11:29 PM, Wolodja Wentland
> <wentland(a)cl.uni-heidelberg.de> wrote:
>
>> I use the radeonhd driver and am very happy with its performance. I ran
>> into the same behaviour you described some time ago and fixed it by using EXA
>> as acceleration method. The applicable part from my xorg.conf is:
>>
>> --- snip ---
>> Section "Device"
>> Driver "radeonhd"
>> Option "DRI" "on"
>> Option "AccelMethod" "EXA"
>> ...
>> EndSection
>> --- snip ---
>
> Meh, when I read this message I instantly modified my xorg.conf
> *knowing* this was the solution... but sadly it still made no difference
> :(
>
> Can you post your full xorg.conf in case I'm missing some other required
> part? Or a log of a correctly working xorg system.
>
> Thanks for your help.
>
>

A good starting point would be to look at your /var/log/Xorg.0.log for
errors (EE) and warnings (WW). Nowadays X his supposed to handle dri or
compositing alone, but sometime it helps to show him the way. On the
contrary by adding to much "random" stuff to your xorg.conf you may mess
the configuration.


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From: Matteo Riva on
On Sun, Jan 31, 2010 at 10:40 AM, tv.debian(a)googlemail.com
<tv.debian(a)googlemail.com> wrote:

> A good starting point would be to look at your /var/log/Xorg.0.log for
> errors (EE) and warnings (WW). Nowadays X his supposed to handle dri or
> compositing alone, but sometime it helps to show him the way. On the
> contrary by adding to much "random" stuff to your xorg.conf you may mess
> the configuration.

Thanks! I had looked at the log but I guess I missed the error line
mentioning dri module not being loaded do to an error.

Installing the firmware-linux package fixed that.

Performance is still not optimal (window resize is still a bit slow) but
at least the workspace/application switch is much faster.

The main problem now is the excessive load on the CPU leading to quite
a bit more heating than usual, but at least I can work without the urge
to smash the keyboard :)


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From: Wolodja Wentland on
On Sun, Jan 31, 2010 at 11:25 +0100, Matteo Riva wrote:
> On Sun, Jan 31, 2010 at 10:40 AM, tv.debian(a)googlemail.com
> <tv.debian(a)googlemail.com> wrote:
>
> Thanks! I had looked at the log but I guess I missed the error line
> mentioning dri module not being loaded do to an error.
>
> Installing the firmware-linux package fixed that.

Great! I just mentioned EXA because it indeed solved this issue for me.

You can safely forget about it now though, because EXA support was added to
radeonhd in version 1.2.2 and is enabled by default since version 1.3.0
(cf. [1])

The versions available in Debian (amd64) are:

xserver-xorg-video-radeonhd | 1.2.1-2 | stable | amd64, i386
xserver-xorg-video-radeonhd | 1.3.0-2 | testing | amd64, i386
xserver-xorg-video-radeonhd | 1.3.0-2 | unstable | amd64, i386

and 1.3.0 was accepted to unstable on the 08.01.2010 and migrated to
testing three days ago \o/

This means that i can finally remove the EXA line from my xorg.conf!
Forgive me my not completely up-to-date information and good luck. :-)

[1] http://www.x.org/wiki/radeonhd
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.''`. Wolodja Wentland <wentland(a)cl.uni-heidelberg.de>
: :' :
`. `'` 4096R/CAF14EFC
`- 081C B7CD FF04 2BA9 94EA 36B2 8B7F 7D30 CAF1 4EFC
From: Hugo Vanwoerkom on
Matteo Riva wrote:
> Squeeze upgrade broke fglrx driver with the new xserver.
>
> How can I downgrade the xserver from 1.7.4 back to 1.6.5 when fglrx
> driver was working fine?
> What packages do I need to downgrade, and where can I find those
> versions?
>
>

1.7 is a major headache for me:
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=567700

Hugo


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