linux-kernel - [v4.6-10530-g28165ec7a99b] i915: *ERROR* "CPU pipe/PCH transcoder" A FIFO underrun

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Date:	Wed, 25 May 2016 09:31:38 +0200
From:	Sedat Dilek <sedat.dilek@...il.com>
To:	Daniel Vetter <daniel.vetter@...ll.ch>
Cc:	intel-gfx <intel-gfx@...ts.freedesktop.org>,
	LKML <linux-kernel@...r.kernel.org>
Subject: [v4.6-10530-g28165ec7a99b] i915: *ERROR* "CPU pipe/PCH transcoder" A
 FIFO underrun

Hi Daniel,

with latest Linus Git I see this with my Intel SandyBridge GPU...

[   17.629014] [drm:intel_cpu_fifo_underrun_irq_handler [i915]]
*ERROR* CPU pipe A FIFO underrun
[   17.630652] [drm:intel_set_pch_fifo_underrun_reporting [i915]]
*ERROR* uncleared pch fifo underrun on pch transcoder A
[   17.630685] [drm:intel_pch_fifo_underrun_irq_handler [i915]]
*ERROR* PCH transcoder A FIFO underrun

Attached are my linux-config, dmesg-output anx Xorg-log.

Any other informations you need?

Regards,
- Sedat -

View attachment "dmesg_4.6.0-10530.1-iniza-small.txt" of type "text/plain" (62402 bytes)

Download attachment "config-4.6.0-10530.1-iniza-small" of type "application/octet-stream" (136087 bytes)

Download attachment "Xorg.0.log" of type "application/octet-stream" (22965 bytes)