Re: X doesn't start with new xserver-xorg-video-intel
2016-12-06 18:37 GMT+01:00 Ben Hutchings <ben@decadent.org.uk>:
> On Tue, 2016-12-06 at 17:07 +0100, Andreas Boll wrote:
>> > 2016-12-05 17:40 GMT+01:00 Ben Hutchings <ben@decadent.org.uk>:
>> > On Mon, 2016-12-05 at 16:27 +0100, Alberto Gonzalez Iniesta wrote:
>> > > On Mon, Dec 05, 2016 at 03:23:24PM +0000, Ben Hutchings wrote:
>> > > >
>> > > > The intel driver is obsolete for all but the oldest chips; you should
>> > > > use xserver-xorg-video-modesetting.
>>
>> Yeah, but xserver-xorg-video-modesetting from jessie misses a lot of
>> features and (glamor) performance optimizations compared to the built-in
>> modesetting driver from stretch/sid.
>
> The modesetting driver was supposed to be backported (in some form) as
> part of the jessie-and-a-half project. I didn't realise that still
> hadn't happened.
>
> How are Intel GPUs going to be supported in jessie-backports?
>
Since there wasn't a proper upstream release of xxv-intel for years,
distributions need to package random git snapshots. To prevent too much
regressions, we (Debian) update only when we really need to, e.g. for
compatibility with new xservers.
As a side effect of the automatic switch to modesetting xxv-intel gets
tested less in sid and testing. Thus the backported xxv-intel package
isn't as well tested as in the past.
>> >
>> > Actually that driver's part of xserver-xorg-core now, not its own
>> > package.
>> >
>> > > > (We should make this switch automatic on upgrade.)
>> > > >
>>
>> We do this already. See
>> https://sources.debian.net/src/xorg-server/2:1.19.0-2/debian/xserver-xorg-core.NEWS/
>> and
>> https://sources.debian.net/src/xorg-server/2:1.19.0-2/debian/patches/06_use-intel-only-on-pre-gen4.diff/
>
> So the intel driver still binds to *some* i915-supported chips,
> contrary to what I expected.
Yeah, those chips don't have good enough OpenGL support to be useful for
glamor acceleration. Even gen4 has issues due to OpenGL shortcomings.
See https://bugs.freedesktop.org/show_bug.cgi?id=97169
Andreas
Reply to: