[CFT] drm updates

[Paul B. Mahol]

On 8/24/08, Paul B. Mahol <onemda at gmail.com> wrote:
> On 8/24/08, Robert Noland <rnoland at freebsd.org> wrote:
>> I've uploaded a final patch set to:
>>
>> http://people.freebsd.org/~rnoland
>>
>> I have committed this version to -CURRENT, but patches are available for
>> RELENG_7 as well.
>>
>> This version mostly just fixes a long standing memory leak.
>>
>> All of the reports for radeon have been good.  I'm still seeing a few
>> odd things with Intel though.  The most severe issue is on my 965gm.
>> After restarting X, it will hang in a way that I have never seen
>> before...  The small amount of evidence that I have been able to collect
>> suggests that this may be due to mesa trashing the hardware.  I've spent
>> a couple of days trying to figure out exactly what could be wrong.  This
>> morning I rebuilt my kernel with a stock drm from src and I got exactly
>> the same hang.  Since this update does help lots of people and doesn't
>> seem to make things worse than they were to begin with, I went ahead and
>> committed it.
>>
>> I was incorrect about the patch to libdrm... It isn't needed in 2.3.1
>> and it is already committed upstream.  I'll commit that update to ports
>> soon also.  It, along with a recent xf86-video-* are needed to enable
>> the new vblank behavior, which will disable vblank interrupts if there
>> are no active consumers.
>>
>> robert.
>>
>
> Do I need to update some ports? because with kernel from HEAD I have
> encountered problems when drm is loaded (agp + drm + i915)
> astro/stellarium caused deadlock, only mouse pointer could move, if I did
> not
> started it, system will panic anyway after some time. I did not yet tested
> vty switching,....
>
> related hardware:
>
> hostb0 at pci0:0:0:0:      class=0x060000 card=0x30a2103c chip=0x27a08086
> rev=0x03
> hdr=0x00
>     vendor     = 'Intel Corporation'
>     device     = '955XM/945GM/PM/GMS/940GML Express Processor to DRAM
> Controller'
>     class      = bridge
>     subclass   = HOST-PCI
> vgapci0 at pci0:0:2:0:     class=0x030000 card=0x30a2103c chip=0x27a28086
> rev=0x03 hdr=0x00
>     vendor     = 'Intel Corporation'
>     device     = 'Mobile 945GM/GU Express Integrated Graphics Controller'
>     class      = display
>     subclass   = VGA
> vgapci1 at pci0:0:2:1:     class=0x038000 card=0x30a2103c chip=0x27a68086
> rev=0x03 hdr=0x00
>     vendor     = 'Intel Corporation'
>     device     = 'Mobile 945GM/GU Express Integrated Graphics Controller'
>     class      = display
>
> also if Xorg is never started, trying to unload agp.ko
> (after unloading i915.ko and drm.ko) module will cause panic.
>

Comparing to xf86-video-i815, xf86-video-intel is more stable (it doesnt panic, crash, hardlocks, ...), but still locks display when starting astro/stellarium.