[Bug 81850] [bisected] regression with kernel 3.15: suspend to ram make system instable

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=81850

--- Comment #13 from Dominik Kopp <suse at kabelfunk.de> ---
(In reply to Christian König from comment #10)

> I'm using an RS880 based laptop for typing this message and this box is
> working perfectly fine with 3.15.

Hello Christian,

interesting news!

I've made some tests with openSUSE 13.2 KDE live by using it as live medium
(boot from SD-card) as well as installed it on a free partition.

Here are the results:
- 64-bit version is not affected. *Only* for 32-bit this issue is valid.
- When desktop effects are enabled - no issue.
- When desktop effects are disabled - suspend/resume triggers my issue.

Easiest way to reproduce e.g. on your RS880 machine:
1. Grab a copy of opensuse 13.2 kde live 32-bit e.g. from
http://ftp.uni-erlangen.de/pub/mirrors/opensuse/distribution/13.2/iso/openSUSE-13.2-KDE-Live-i686.iso

2. Burn it on DVD or copy to SD or USB stick (I'm using "SUSE Studio
Imagewriter" for that. "dd" may also work)

3. After booting, press shift-alt-F12 to disable desktop effects.
4. suspend to RAM and resume.
=> last line should be black on screen
(5. pressing shift-alt-F12 again and screen will freeze except for the mouse)
(6. suspend to RAM and resume and everything will be OK again.)

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