[Nouveau] [Bug 90626] HP ZBook 15 nouveau driver hangup for kernel >= 4.1

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=90626

--- Comment #31 from Ortwin Glück <odi at odi.ch> ---
The delays during boot are not caused by the bios shadow code but by this:
[    5.878439] nouveau E[  PGRAPH][0000:01:00.0] wait for idle timeout (en: 1,
ctxsw: 0, busy: 1)
[    7.877714] nouveau E[  PGRAPH][0000:01:00.0] wait for idle timeout (en: 1,
ctxsw: 0, busy: 1)
[    9.876992] nouveau E[  PGRAPH][0000:01:00.0] wait for idle timeout (en: 1,
ctxsw: 0, busy: 1)
[   11.876268] nouveau E[  PGRAPH][0000:01:00.0] wait for idle timeout (en: 1,
ctxsw: 0, busy: 1)

So I think you could simply scrap the "fast" version and always use the 4K
"slow" version for compatibility.

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