Re: cirrusdrmfb broken with simplefb
From: Ingo Molnar <mingo@kernel.org>
Date: 2013-12-19 12:31:44
Also in:
lkml
* David Herrmann [off-list ref] wrote:
Hi On Thu, Dec 19, 2013 at 1:03 AM, One Thousand Gnomes [off-list ref] wrote:quoted
quoted
quoted
That bug always existed, simplefb is just the first driver to hit it (vesafb/efifb didn't use resources). I'm aware of the issue but as a workaround you can simply disable CONFIG_X86_SYSFB. That restores the old behavior.This looks like a regression, so we'll either need a fix or we'll have to mark CONFIG_X86_SYSFB as CONFIG_BROKEN.Kernel bugzilla has entries for simplefb breaking both vesafb and matrox mga.Thanks for the hints. I've read through all I could find and tried to provide some help. I'm kind of confused, most of them enable CONFIG_X86_SYSFB (which is 'n' by default) but don't read the help text. I did my best to tell people that this option requires CONFIG_FB_SIMPLE, but if you don't read the help-text you won't notice that. Don't know what to do about that..
People generally don't read the help text - still the kernel should not break. So please the Kconfig angle (and the bootup logic, etc.) fool-proof, graphics failures are not fun to debug! Thanks, Ingo