[Bug 106780] New: intel_powerclamp: Start idle injection to reduce power with [drm:intel_pipe_update_end [i915]] *ERROR* Atomic update failure on pipe B

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=106780

            Bug ID: 106780
           Summary: intel_powerclamp: Start idle injection to reduce power
                    with [drm:intel_pipe_update_end [i915]] *ERROR* Atomic
                    update failure on pipe B
           Product: DRI
           Version: unspecified
          Hardware: Other
                OS: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: DRM/Intel
          Assignee: intel-gfx-bugs at lists.freedesktop.org
          Reporter: bugzilla at colorremedies.com
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
                CC: intel-gfx-bugs at lists.freedesktop.org

Summary:
While Firefox is under heavy load, the system becomes unresponsive, mouse arrow
is jerky, switching applications has delays. Top shows four kinject processes
consuming just under 50% CPU each. This is a recent problem and could be one
of:
a. kernel 4.16, I didn't experience it with 4.15
b. use of external display, which approximately coincides with a.

Report is for kernel 4.16.13-300.fc28.x86_64, but has happened with all the
4.17 rc's as well.

HP Spectre Notebook
SKU Number: W2K28UA#ABA

thermald is running, thermald-1.7.1-2.fc28.x86_64

lspci
00:00.0 Host bridge [0600]: Intel Corporation Xeon E3-1200 v5/E3-1500 v5/6th
Gen Core Processor Host Bridge/DRAM Registers [8086:1904] (rev 08)

00:02.0 VGA compatible controller [0300]: Intel Corporation Skylake GT2 [HD
Graphics 520] [8086:1916] (rev 07) (prog-if 00 [VGA controller])

/proc/cpuinfo
model name      : Intel(R) Core(TM) i7-6500U CPU @ 2.50GHz
microcode       : 0xc2


Example from dmesg:

[15262.909362] intel_powerclamp: Start idle injection to reduce power
[15267.716816] [drm:intel_pipe_update_end [i915]] *ERROR* Atomic update failure
on pipe B (start=671808 end=671809) time 169 us, min 1192, max 1199, scanline
start 1189, end 1201
[15344.030304] intel_powerclamp: Stop forced idle injection
[15432.139779] intel_powerclamp: Start idle injection to reduce power
[15460.194230] intel_powerclamp: Stop forced idle injection
[16329.281047] intel_powerclamp: Start idle injection to reduce power
[16406.504159] intel_powerclamp: Stop forced idle injection
[16410.510943] intel_powerclamp: Start idle injection to reduce power
[16502.669255] intel_powerclamp: Stop forced idle injection
[16558.736709] intel_powerclamp: Start idle injection to reduce power
[16568.533524] [drm:intel_pipe_update_end [i915]] *ERROR* Atomic update failure
on pipe B (start=749792 end=749793) time 263 us, min 1192, max 1199, scanline
start 1187, end 1206
[16769.567613] [drm:intel_pipe_update_end [i915]] *ERROR* Atomic update failure
on pipe B (start=761844 end=761845) time 261 us, min 1192, max 1199, scanline
start 1186, end 1206


Attaching dmesg, lspci output. Will enable drm.debug=0xe and reproduce and
report back.

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