Re: 2.6.13-rc3-mm1 - breaks DRI

[Andrew Morton <akpm@osdl.org>]

Ed Tomlinson <tomlins@cam.org> wrote:
>
>> ----------  Forwarded Message  ----------
>> 
>> Subject: Re: Xorg and RADEON (dri disabled)
>> Date: Wednesday 20 July 2005 21:25
>> From: Ed Tomlinson <tomlins@cam.org>
>> To: debian-amd64@lists.debian.org
>> Cc: Michal Schmidt <xschmi00@stud.feec.vutbr.cz>
>> 
>> On Wednesday 20 July 2005 21:13, Michal Schmidt wrote:
>> > Ed Tomlinson wrote:
>> > > Hi,
>> > > 
>> > > With Xorg I get:
>> > > 
>> > > (==) RADEON(0): Write-combining range (0xd0000000,0x8000000)
>> > > drmOpenDevice: node name is /dev/dri/card0
>> > > drmOpenDevice: open result is -1, (No such device)
>> > > drmOpenDevice: open result is -1, (No such device)
>> > > drmOpenDevice: Open failed
>> > > drmOpenDevice: node name is /dev/dri/card0
>> > > drmOpenDevice: open result is -1, (No such device)
>> > > drmOpenDevice: open result is -1, (No such device)
>> > > drmOpenDevice: Open failed
>> > > drmOpenByBusid: Searching for BusID pci:0000:01:00.0
>> > > drmOpenDevice: node name is /dev/dri/card0
>> > > drmOpenDevice: open result is 7, (OK)
>> > > drmOpenByBusid: drmOpenMinor returns 7
>> > > drmOpenByBusid: drmGetBusid reports pci:0000:01:00.0
>> > > (II) RADEON(0): [drm] loaded kernel module for "radeon" driver
>> > > (II) RADEON(0): [drm] DRM interface version 1.2
>> > > (II) RADEON(0): [drm] created "radeon" driver at busid "pci:0000:01:00.0"
>> > > (II) RADEON(0): [drm] added 8192 byte SAREA at 0xffffc20000411000
>> > > (II) RADEON(0): [drm] drmMap failed
>> > > (EE) RADEON(0): [dri] DRIScreenInit failed.  Disabling DRI.
>> > > 
>> > > And glxgears reports 300 frames per second.  How do I get dri back?  It
>> > > was working fine with XFree.  The XF86Config-4 was changed by the upgrade
>> > > dropping some parms in the Device section.  Restoring them has no effect
>> > > on the problem.
>> 
>> > What kernel do you use? I get the same behaviour with 2.6.13-rc3-mm1, 
>> > but it works with 2.6.13-rc3.
>> 
>> I also use 2.6.13-rc3-mm1.  Will try with a previous version an report to lkml if
>> it works.
>> 
>
> I just tried 13-rc2-mm1 and dri is working again. Its reported to also work
> with 13-rc3.

Useful info, thanks.

>  What in mm1 is apt to be breaking dri?

Faulty kernel programming ;)

I assume that the failure to open /dev/dri/card0 only happens in rc3-mm1?

Could you compare the dmesg output for 2.6.13-rc3 versus 2.6.13-rc3-mm1? 
And double-check the .config settings: occasionally config options will be
renamed and `make oldconfig' causes things to get acidentally disabled.
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