[Bug 74102] [ILK/SNB/IVB]igt/testdisplay causes *ERROR* Pipe A FIFO underrun

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=74102

--- Comment #28 from Thomas Roller <rauchwolke at gmx.net> ---
For me the kernel/system doesn't hang/crash but i get this two messages during
bootup, no userland is loaded at this point in time:

[    3.089023] [drm:ironlake_irq_handler] *ERROR* CPU pipe A FIFO underrun
[    3.129151] [drm:intel_check_pch_fifo_underruns] *ERROR* pch fifo underrun
on pch transcoder A

# uname -a
Linux onion 4.7.6 #8 SMP Fri Oct 7 00:18:41 CEST 2016 x86_64 GNU/Linux

# lspci -v
00:02.0 VGA compatible controller: Intel Corporation 2nd Generation Core
Processor Family Integrated Graphics Controller (rev 09) (prog-if 00 [VGA
controller])
        Subsystem: Lenovo 2nd Generation Core Processor Family Integrated
Graphics Controller
        Flags: bus master, fast devsel, latency 0, IRQ 26
        Memory at f0000000 (64-bit, non-prefetchable) [size=4M]
        Memory at e0000000 (64-bit, prefetchable) [size=256M]
        I/O ports at 5000 [size=64]
        [virtual] Expansion ROM at 000c0000 [disabled] [size=128K]
        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

-- 
You are receiving this mail because:
You are on the CC list for the bug.
You are the assignee for the bug.
You are the QA Contact for the bug.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://lists.freedesktop.org/archives/intel-gfx-bugs/attachments/20161006/cb652fc5/attachment.html>