Ubuntu
linux package

  1. Bug #1566302
  2. Comment #146

Comment 146 for bug 1566302

Revision history for this message
Arne (old-man999-r) wrote :

We experienced this on a HP-Probook 6450B with kernel 4.4 running the provided tests:

echo platform > /sys/power/disk

[ 533.556002] perf interrupt took too long (2507 > 2500), lowering kernel.perf_event_max_sample_rate to 50000
[ 1830.133850] perf interrupt took too long (5002 > 5000), lowering kernel.perf_event_max_sample_rate to 25000
[ 2537.897989] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU pipe A FIFO underrun
[ 2537.898048] [drm:intel_pch_fifo_underrun_irq_handler [i915]] *ERROR* PCH transcoder A FIFO underrun
[ 3313.942173] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU pipe A FIFO underrun
[ 3313.942273] [drm:intel_pch_fifo_underrun_irq_handler [i915]] *ERROR* PCH transcoder A FIFO underrun
[ 3313.977472] [drm:intel_pch_fifo_underrun_irq_handler [i915]] *ERROR* PCH transcoder B FIFO underrun

echo disk > /sys/power/state

[18786.704686] sd 0:0:0:0: [sda] Starting disk
[18786.708197] ERROR @wl_wowl_ind_wake_reason : Unable to get wake reason, err = -95