[Bug 110511] i915 flickering in new XPS13 9380 (2019)

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=110511

--- Comment #13 from Ville Syrjala <ville.syrjala at linux.intel.com> ---
(In reply to Paulo J. Matos from comment #11)
> Created attachment 144319 [details]
> rc5+ kernel with enable_psr=0

The log was cut off so couldn't see that PSR was in fact disabled. You can fix
that by passing eg. log_buf_len=2M to the kernel cmdline.

Anyways, after a second glance at the logs I see the sink does sometimes
indicate that the receiver port was not synchronized. Not sure why the failure
manifests at that level with the link otherwise being reported as stable. Looks
like we could try to reduce the link rate a bit and still have enough bandwidth
for the 4k at 60 mode. I'll attach something to that effect.

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