Graphics drivers requiring kernel modesetting

Dennis J. dennisml at
Fri Apr 30 14:34:51 UTC 2010

On 04/30/2010 05:24 AM, Dave Airlie wrote:
> On Thu, 2010-04-29 at 13:56 +0200, Dennis J. wrote:
>> On 04/29/2010 05:24 AM, Dave Airlie wrote:
>>> On Thu, 2010-04-29 at 04:15 +0200, Björn Persson wrote:
>>>> As far as I understand, both Nouveau and the Intel graphics driver now require
>>>> kernel modesetting, starting with Fedora 13. Before I edit
>>>> a second time I
>>>> wanted to ask: Does the Radeon driver still support userspace modesetting, or
>>>> are there in fact no drivers in Fedora 13 that work both with and without
>>>> kernel modesetting? I'd like to finally get that page fully up-to-date.
>>> radeon still supports both modes of operation, though bugs reported
>>> against non-kms code will most likely end up in the bin in favour of
>>> fixing kms bugs.
>> Can you give a rough estimate/timeframe for when the performance
>> regressions for R7xx cards since F11 will be fixed? That is the only thing
>> that keeps me on F11 right now. When running the F13 LiveCD I cannot play a
>> 360p Youtube video without it dropping frames due to high CPU usage but on
>> F11 things work fine an CPU usage is significantly lower.
> If you are on an AGP card I suspect its that, we haven't had much
> reports of speed problems on r700 normally. There are some patches going
> in upstream to help with that, not sure if they'll make F-13 at this
> point.

It's a PCI Express card. I filed a bug here a while ago that contains all 
kinds of logs and a link to a smolt profile:

(I have to use "nouveau.modeset=0" for booting in that bug because without 
that the F13 doesn't boot at all. See
for more information on that.)


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