Created attachment 133646 [details]
4.12.8-2-ARCH dmesg with drm.debug=0xe
After the upgrade to 4.12 I get following while booting
[drm:intel_set_cpu_fifo_underrun_reporting [i915]] *ERROR* uncleared fifo underrun on pipe A
[drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU pipe A FIFO underrun
Laptop: HP 15 notebook PC. Kernel 4.11, 4.10, 4.9 work fine without errors.
Linux Extreme 4.12.8-2-ARCH #1 SMP PREEMPT Fri Aug 18 14:08:02 UTC 2017 x86_64 GNU/Linux
Created attachment 133647 [details]
Mainline with uname and dmesg
Adding tag into "Whiteboard" field - ReadyForDev
*Status is correct
*Platform is included
*Feature is included
*Priority and Severity correctly set
Hello Mahfuz, any change with latest tip or mainline? Thanks.
Created attachment 135141 [details]
Seems like this is fixed in mainline.
Kernel 4.14.12 brings the same problem for my (same) device. Up until 4.14.11 , things worked fine.
(In reply to Mahfuz from comment #5)
> Kernel 4.14.12 brings the same problem for my (same) device. Up until
> 4.14.11 , things worked fine.
Could you try to bisect between 4.14.11 and 4.14.12?
First of all. Sorry about spam.
This is mass update for our bugs.
Sorry if you feel this annoying but with this trying to understand if bug still valid or not.
If bug investigation still in progress, please ignore this and I apologize!
If you think this is not anymore valid, please comment to the bug that can be closed.
If you haven't tested with our latest pre-upstream tree(drm-tip), can you do that also to see if issue is valid there still and if you cannot see issue there, please comment to the bug.
I was in remote location , I'll update within a week.
This doesn't happen with 4.15.
OK, thanks for the feedback, closing.