linux-kernel - Kernel 3.12.x breaks video playback using XBMC

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Date:	Tue, 14 Jan 2014 20:25:32 +0100
From:	bjoern <lkml@...l-home.ch>
To:	linux-kernel@...r.kernel.org
Subject: Kernel 3.12.x breaks video playback using XBMC

I use Ubuntu 13.10 x64. I run XBMC Alpha Git 10 using HDMI output.

I use Ubuntu kernels from mainline
(http://kernel.ubuntu.com/~kernel-ppa/mainline)

Kernel 3.8.x / 3.11.10 (and some others kernels) work fine and every
frame is rendered properly.

Problem:
Using kernel 3.12.1 / 3.12.7 (I tested only these two) video playback
skips several frames per second.

Mainboard: Intel DH61AG
BIOS: AGH6110H.86A.0106.2013.0509.1441
CPU: Intel i3-3240
Memory: 4 Gb
One SSD is being used

I am attaching logs from dmesg - there are visible differences between
3.11 and 3.12, e.g.

ACPI: \_SB_.PCI0.TPMX: can't evaluate _ADR (0x5)
ACPI: \_SB_.PCI0.PDRC: can't evaluate _ADR (0x5)
ACPI: \_SB_.PCI0.DOCK: can't evaluate _ADR (0x5)

Regards,
Bjoern
View attachment "kernel_3.11.10.log" of type "text/x-log" (56029 bytes)

View attachment "kernel_3.12.1.log" of type "text/x-log" (55428 bytes)

View attachment "kernel_3.12.7.log" of type "text/x-log" (56220 bytes)