[RFC] Deprecation and removal of the drm2 driver

[Johannes Lundberg]

On Tue, May 22, 2018 at 1:19 PM, Ian FREISLICH <
ian.freislich at capeaugusta.com> wrote:

> Johannes,
>
> On drm-stable Xorg no longer crashes on the first execution of Firefox, so
> that's an improvement.
>
> FWIW (and not to start a bikeshed discussion) stable in the context of
> FreeBSD has meant ABI stability, not crash-free.  If you're going to rename
> the ports, I'd suggest "drm" and "drm-devel".
>

Yes we've been talking about that. drm-next and drm-stable naming is a bit
unfortunate.


>
> Ian
>
>
> On 05/21/2018 03:30 PM, Johannes Lundberg wrote:
>
>
>
> On Mon, May 21, 2018 at 8:01 PM, Ian FREISLICH <
> ian.freislich at capeaugusta.com> wrote:
>
>> Niclas
>>
>>
>> On 05/18/2018 01:58 PM, Niclas Zeising wrote:
>>
>>> [ Cross posted to freebsd-current@ and freebsd-x11 at .  Please respect
>>> reply-to and send all replies to freebsd-x11 at .  Thanks! ]
>>>
>>>
>>> Hi!
>>> I propose that we remove the old drm2 driver (sys/dev/drm2) from
>>> FreeBSD.  I suggest the driver is marked as deprecated in 11.x and removed
>>> from 12.0, as was done for other drivers recently.  Some background and
>>> rationale:
>>>
>>> The drm2 driver was the original port of a KMS driver to FreeBSD. It was
>>> done by Konstantin Belousov to support Intel graphics cards, and later
>>> extended by Jean-Sébastien Pédron as well as Konstantin to match what's in
>>> Linux 3.8.  This included unstable support from Haswell, but nothing newer
>>> than that.
>>>
>>> For quite some time now we have had the graphics/drm-stable-kmod and
>>> graphics/drm-next-kmods which provides support for modern AMD and Intel
>>> graphics cards.  These ports, together with the linuxkpi, or lkpi, has made
>>> it significantly easier to port and update our graphics drivers. Further,
>>> these new drivers cover the same drivers as the old drm2 driver.
>>>
>>> What does the community think?  Is there anyone still using the drm2
>>> driver on 12-CURRENT?  If so, what is preventing you from switching to the
>>> port?
>>>
>>
>> I'm running -CURRENT on all my systems.  I have a "3rd Gen" HD Graphics
>> 4000 that I'm running drm-next on but I'm about to revert to drm2 because
>> of instabilities.  Xorg spontaneously crashes, and doesn't on drm2. I also
>> have a Haswell system running drm2 which I have not tried drm-next because
>> SWMBO is particularly intolerant of stuff not working.
>>
>
> If drm-next-kmod is causing issues, please try drm-stable-kmod. (we should
> really rename drm-next to drm-unstable/beta..)
>
>
>>
>> I also ran drm-next successfully on a Sunrise Point-LP system with "Intel
>> UHD Graphics 620" because drm2 didn't support the graphics chip before
>> switching to linux to get the trackpad and sound working.
>>
>> I guess the situation is that your mileage may vary depending on your
>> system.  I'm OK with installing drm2 from ports, but at this point I'm not
>> really OK with loosing drm2 at this stage because of the instability in
>> drm-next on my one system.
>>
>> Ian
>>
>> --
>>
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>
>
> --
> Ian Freislich
> +1 404 574 0228
>
>
>