[Bug 95461] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU pipe A FIFO underrun

[bugzilla-daemon at bugzilla.kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=95461

Cruz Fernandez <cruz.fernandez at gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |cruz.fernandez at gmail.com

--- Comment #33 from Cruz Fernandez <cruz.fernandez at gmail.com> ---
I've reproduced this error with kernel 4.5

sudo lspci -v -s 0:02
00:02.0 VGA compatible controller: Intel Corporation 2nd Generation Core
Processor Family Integrated Graphics Controller (rev 09) (prog-if 00 [VGA
controller])
    Subsystem: Dell 2nd Generation Core Processor Family Integrated Graphics
Controller
    Flags: bus master, fast devsel, latency 0, IRQ 31
    Memory at c0000000 (64-bit, non-prefetchable) [size=4M]
    Memory at b0000000 (64-bit, prefetchable) [size=256M]
    I/O ports at 4000 [size=64]
    Expansion ROM at <unassigned> [disabled]
    Capabilities: [90] MSI: Enable+ Count=1/1 Maskable- 64bit-
    Capabilities: [d0] Power Management version 2
    Capabilities: [a4] PCI Advanced Features
    Kernel driver in use: i915
    Kernel modules: i915

last part of dmesg:

[ +32,012300] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU pipe
A FIFO underrun
[  +0,001882] [drm:intel_set_pch_fifo_underrun_reporting [i915]] *ERROR*
uncleared pch fifo underrun on pch transcoder A
[  +0,000025] [drm:intel_pch_fifo_underrun_irq_handler [i915]] *ERROR* PCH
transcoder A FIFO underrun
[  +0,029961] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU pipe
B FIFO underrun
[  +0,056379] [drm:intel_set_pch_fifo_underrun_reporting [i915]] *ERROR*
uncleared pch fifo underrun on pch transcoder B
[  +0,031279] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU pipe
B FIFO underrun
[  +0,032886] [drm:intel_check_pch_fifo_underruns [i915]] *ERROR* pch fifo
underrun on pch transcoder B

uname -a
Linux mymachine-XPS-L412Z 4.5.0-040500rc6-generic #201602281230 SMP Sun Feb 28
17:33:02 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux

-- 
You are receiving this mail because:
You are on the CC list for the bug.
You are the assignee for the bug.