[Bug 69301] no screen on update from 3.12.0

[bugzilla-daemon@bugzilla.kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=69301

--- Comment #9 from Jan Outhuis <jouthuis@dds.nl> ---
Moved on to 3.13.1. This time radeon.dpm=0 solves the problem, i.e. I'm
getting full functionality on all screens, textconsole as well as
graphic console.
Without radeon.dpm=0 on the grub commandline: still same behaviour on
boot, i.e. black screen, hardware reboot required.

On Thu, 2014-01-23 at 14:44 +0000, bugzilla-daemon@bugzilla.kernel.org
wrote:
> https://bugzilla.kernel.org/show_bug.cgi?id=69301
> 
>             Bug ID: 69301
>            Summary: no screen on update from 3.12.0
>            Product: Drivers
>            Version: 2.5
>     Kernel Version: 3.13.0
>           Hardware: x86-64
>                 OS: Linux
>               Tree: Mainline
>             Status: NEW
>           Severity: normal
>           Priority: P1
>          Component: Video(DRI - non Intel)
>           Assignee: drivers_video-dri@kernel-bugs.osdl.org
>           Reporter: jouthuis@dds.nl
>         Regression: No
> 
> 3.13.0 hangs on video initialisation for my Radeon HD7750 card. It worked on
> 3.12.0 and previous on 3.11.4.
> 
> After upgrading to 3.13.0, the bootprocess doesn't get past the
> video-initialisation and leaves me with a black screen and dead keyboard.
> 
> I'm running Debian testing on 64bit architecture.
>

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