[Bug 94593] Flickering Screen on Dell XPS13 9350

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=94593

--- Comment #20 from thomas bonfort <thomas.bonfort at gmail.com> ---
Flickering still present on watermarks-wa

cp /boot/config-4.4.0-17-generic .config
make -j 4 deb-pkg INSTALL_MOD_STRIP=1
#answer default on everything except i915 debugging

booted using no specific enable_psr flags

$ dmesg|grep i915
[    1.754871] [drm] Finished loading i915/skl_dmc_ver1.bin (v1.26)
[    2.280124] [drm] Initialized i915 1.6.0 20160330 for 0000:00:02.0 on minor
0
[    3.331669] i915 0000:00:02.0: fb0: inteldrmfb frame buffer device
[    4.452639] snd_hda_intel 0000:00:1f.3: bound 0000:00:02.0 (ops
i915_audio_component_bind_ops [i915])
[  207.155111] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU
pipe A FIFO underrun

the first flickering occurs at the time the underrun message appears in the
logs (after a minute or so of usage)

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