[Bug 68535] [IVB regression] Screen corruption since Kernel 3.9 (+ 3.10) with HD 4000 on H77 Board HDMI to DVI

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=68535

--- Comment #15 from Steven <sourcepower at gmx.org> ---
- this is a permanent corruption, it seems the system freezed or something like
this, i can only "recover" the system if i press the power button for >4
seconds / press the reset button or pull the power cable
- the system doesn't recognize any keyboard (connected via usb) input
- pull out and (re)plugin the monitor cable => the corruption is still there
- i can reproduce the issue if i connect the system via HDMI to HDMI cable to
my Samsung LCD TV
- this is a hardened Gentoo system with software hard disk encryption
(dm-crypt) and the corrution happens "just" before i need to enter the password
to decrypt/unlock the "/" filesystem and continue the boot process
- unfortunatly i don't have a serial console and the board used doesn't offer
something like a serial console,so i don't know how to get any information from
the console
- i don't know if the issue persist if i use a DVI to DVI cable to connect the
board to the monitor because i don't have such a cable currently but i can buy
it if needed for troubleshooting

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