[Bug 98046] iMac11,1 (RV770/M98L [Mobility Radeon HD 4850]) needs nomodeset to boot

bugzilla-daemon at freedesktop.org bugzilla-daemon at freedesktop.org
Sat Aug 26 12:12:39 UTC 2017


--- Comment #11 from Justin Thiessen <justin.thiessen at gmail.com> ---
so with the reversions from comment 4 (some conflict resolution by hand
necessary, but seemed straightforward), the radeon driver loads and the primary
display gets initialized and seems to work.

seems like either:
* the screen dimming is broken resulting in a dark primary screen when that
kicks in


* after suspend the secondary display becomes primary and the internal screen
is dark.

haven't yet dug into this.

looks like i'm seeing occasional artifacts as well.

This is with kubuntu 17.04, kernel:

4.10.0-32-generic #36-Ubuntu SMP

Definitely progress, considering

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