Bug#808916: WARN in drm_atomic_check_only() during boot, Intel GM965 (gen4)

To: 808916@bugs.debian.org
Subject: Bug#808916: WARN in drm_atomic_check_only() during boot, Intel GM965 (gen4)
From: Ronny Standtke <ronny.standtke@gmx.net>
Date: Sat, 16 Jan 2016 16:38:30 +0100
Message-id: <[🔎] 569A63F6.8040909@gmx.net>
Reply-to: Ronny Standtke <ronny.standtke@gmx.net>, 808916@bugs.debian.org
In-reply-to: <[🔎] 569A3E16.7050903@gmx.net>
References: <[🔎] 569A3B64.9050009@gmx.net> <[🔎] 569A3E16.7050903@gmx.net>

I can now definitely confirm that this is a regression in linux 4.3. I
just tested with linux 4.2.6 and everything works fine, even though I
also see the log message about  intel_cpu_fifo_underrun_irq_handler.

Any hope to get this fixed in 4.3 or do we have to wait for 4.4
(including linux-tools, etc.) to hit debian and the backports?

Cheers

Ronny

Reply to:

Follow-Ups:
- Bug#808916: WARN in drm_atomic_check_only() during boot, Intel GM965 (gen4)
  - From: Ronny Standtke <ronny.standtke@gmx.net>

References:
- Bug#808916: linux-image-4.3.0-1-amd64: non-blocking stack trace crash during startup (drm/i915) in drm_atomic_check_only+0x46f/0x540
  - From: Ronny Standtke <ronny.standtke@gmx.net>
- Bug#808916: linux-image-4.3.0-1-amd64: non-blocking stack trace crash during startup (drm/i915) in drm_atomic_check_only+0x46f/0x540
  - From: Ronny Standtke <ronny.standtke@gmx.net>

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