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From: Jani Nikula <jani.nikula@linux.intel.com>
To: James Bottomley <James.Bottomley@HansenPartnership.com>,
	Thorsten Leemhuis <regressions@leemhuis.info>,
	"Zanoni, Paulo R" <paulo.r.zanoni@intel.com>,
	"dri-devel@lists.freedesktop.org"
	<dri-devel@lists.freedesktop.org>,
	"intel-gfx@lists.freedesktop.org"
	<intel-gfx@lists.freedesktop.org>
Cc: "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>
Subject: Re: [Intel-gfx] Skylake graphics regression: projector failure with 4.8-rc3
Date: Tue, 20 Sep 2016 11:14:39 +0300	[thread overview]
Message-ID: <87oa3jm1hs.fsf@intel.com> (raw)
In-Reply-To: <1474313230.2398.30.camel@HansenPartnership.com>

On Mon, 19 Sep 2016, James Bottomley <James.Bottomley@HansenPartnership.com> wrote:
> On Mon, 2016-09-19 at 08:09 -0700, James Bottomley wrote:
>> On Sun, 2016-09-18 at 13:35 +0200, Thorsten Leemhuis wrote:
>> > Hi! James & Paulo: What's the current status of this?
>> 
>> No, the only interaction has been the suggestion below for a revert,
>> which didn't fix the problem.
>> 
>> >  Was this issue discussed elsewhere or even fixed in between? Just 
>> > asking, because this issue is on the list of regressions for 4.8.
>> 
>> 
>> I'm just about to try out -rc7, but it's not fixed so far.
>
> OK, with -rc7 and the i915 fixes, there seems to be a marked
> improvement.  I can no longer crash the crtc by using lots of xrandr
> switches, which was the principal problem.
>
> I've so far only got one of these in the logs
>
> [14858.635035] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR*
> CPU pipe B FIFO underrun
>
> And the only residual problem seems to be that the monitor goes blank
> periodically, but this can be fixed by switching resolution a couple of
> times.
>
> I haven't seen any of the link training errors so far and I've run
> through my usual battery of be nasty to the external monitor tests.

Thanks for the update. We still have fixes for the underruns in the
pipeline.

BR,
Jani.


-- 
Jani Nikula, Intel Open Source Technology Center
_______________________________________________
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dri-devel@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/dri-devel

WARNING: multiple messages have this Message-ID (diff)
From: Jani Nikula <jani.nikula@linux.intel.com>
To: James Bottomley <James.Bottomley@HansenPartnership.com>,
	Thorsten Leemhuis <regressions@leemhuis.info>, "Zanoni\,
	Paulo R" <paulo.r.zanoni@intel.com>,
	"dri-devel\@lists.freedesktop.org"
	<dri-devel@lists.freedesktop.org>,
	"intel-gfx\@lists.freedesktop.org"
	<intel-gfx@lists.freedesktop.org>
Cc: "linux-kernel\@vger.kernel.org" <linux-kernel@vger.kernel.org>
Subject: Re: [Intel-gfx] Skylake graphics regression: projector failure with 4.8-rc3
Date: Tue, 20 Sep 2016 11:14:39 +0300	[thread overview]
Message-ID: <87oa3jm1hs.fsf@intel.com> (raw)
In-Reply-To: <1474313230.2398.30.camel@HansenPartnership.com>

On Mon, 19 Sep 2016, James Bottomley <James.Bottomley@HansenPartnership.com> wrote:
> On Mon, 2016-09-19 at 08:09 -0700, James Bottomley wrote:
>> On Sun, 2016-09-18 at 13:35 +0200, Thorsten Leemhuis wrote:
>> > Hi! James & Paulo: What's the current status of this?
>> 
>> No, the only interaction has been the suggestion below for a revert,
>> which didn't fix the problem.
>> 
>> >  Was this issue discussed elsewhere or even fixed in between? Just 
>> > asking, because this issue is on the list of regressions for 4.8.
>> 
>> 
>> I'm just about to try out -rc7, but it's not fixed so far.
>
> OK, with -rc7 and the i915 fixes, there seems to be a marked
> improvement.  I can no longer crash the crtc by using lots of xrandr
> switches, which was the principal problem.
>
> I've so far only got one of these in the logs
>
> [14858.635035] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR*
> CPU pipe B FIFO underrun
>
> And the only residual problem seems to be that the monitor goes blank
> periodically, but this can be fixed by switching resolution a couple of
> times.
>
> I haven't seen any of the link training errors so far and I've run
> through my usual battery of be nasty to the external monitor tests.

Thanks for the update. We still have fixes for the underruns in the
pipeline.

BR,
Jani.


-- 
Jani Nikula, Intel Open Source Technology Center

  reply	other threads:[~2016-09-20  8:14 UTC|newest]

Thread overview: 17+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-08-26 13:10 Skylake graphics regression: projector failure with 4.8-rc3 James Bottomley
2016-08-26 13:10 ` James Bottomley
2016-08-26 13:11 ` James Bottomley
2016-08-31 18:23 ` James Bottomley
2016-08-31 18:23   ` James Bottomley
2016-08-31 21:43   ` James Bottomley
2016-08-31 21:43     ` James Bottomley
2016-08-31 21:51     ` Zanoni, Paulo R
2016-08-31 21:51       ` [Intel-gfx] " Zanoni, Paulo R
2016-08-31 22:25       ` James Bottomley
2016-08-31 22:25         ` James Bottomley
2016-09-18 11:35         ` Thorsten Leemhuis
2016-09-19 15:09           ` James Bottomley
2016-09-19 19:27             ` James Bottomley
2016-09-19 19:27               ` [Intel-gfx] " James Bottomley
2016-09-20  8:14               ` Jani Nikula [this message]
2016-09-20  8:14                 ` Jani Nikula

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