[Bug 107623] (4.18.3)[drm:hwss_edp_wait_for_hpd_ready [amdgpu]] *ERROR* hwss_edp_wait_for_hpd_ready: wait timed out!

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=107623

Daniel Drake <dan at reactivated.net> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|---                         |WORKSFORME

--- Comment #5 from Daniel Drake <dan at reactivated.net> ---
This issue was detected on 4.18.3 when using a somewhat reduced developer
config. When using our usual full distro kernel config (from Ubuntu), the issue
convincingly goes away.

Both Jian-Hong and I looked at the differences in the config and couldn't spot
anything obvious that would explain different behaviour. Trying to bisect good
and bad configs, for a while it looked like it might be CONFIG_NUMA_BALANCING=y
and CONFIG_NUMA_BALANCING_DEFAULT_ENABLED=y but we then disproved that in
further experiments. We didn't find which config option is responsible for the
different behaviour.

There's probably a bug here somewhere, but as it's working on our shipped
config I'll close this issue, as we need to focus our time on other issues on
this platform.

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