[Bug 70145] Random blank screen after login with Haswell 4400

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=70145

--- Comment #15 from Maksim Lin <maks at manichord.com> ---
Hi,

Ok having read this LWN article http://lwn.net/Articles/588799/ I'm assumming
this output:
dmesg|grep taint
[Thu Apr  3 11:41:39 2014] sdhci: module verification failed: signature and/or 
required key missing - tainting kernel
[Thu Apr  3 11:41:40 2014] sunrpc: module has bad taint, not creating trace
events
[Thu Apr  3 11:41:40 2014] nfs: module has bad taint, not creating trace events
[Thu Apr  3 11:41:40 2014] cfg80211: module has bad taint, not creating trace
events
...etc

is just because of the bad re-use of the taint flag that will be fixed in 3.15

So given I'm building my own 3.14 kernel with just 1 patch applied from Daniel
(bug #73694), I'm pretty sure I dont have any tainted modules.

I'm rebuilding the 3.14 released kernel now (instead of rc7), will try using
"i915.i915_enable_fbc=0" and will report back.

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