[Bug 74420] EQ overflowing - recurring total X crash

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=74420

--- Comment #14 from Barto <mister.freeman at laposte.net> ---
I have a similar problem, the screen freezes ( keyboard and mouse are frozen
too ) for one minute, then X crashes with an automatic reboot of X, after the
reboot all seems Ok but 2 minutes later the same problem occurs again,

I use archlinux 64 bits, radeon driver ( I have an ati radeon HD4650 pcie ),
mesa 10.0.3 and kernel 3.12.9, with dpm mode enabled,

but this bug is very rare and difficult to reproduce, and I forgot to copy the
Xorg log file ( because at each reboot the Xorg log is automaticaly erased ),

but for what I saw with my configuration the bug seems to be related with vdpau
driver which is part of mesa package, and also related with the linux kernel
because vdpau relies on linux kernel,

a possible pattern to trigger the bug with my configuration :

- use KDE 4.12 with opengl 2.0 enabled ( kwin )
- enable DPM feature for radeon driver
- use a software who uses vdpau features ( for example "kaffeine" who is a
dvb-t software, mplayer )
- open multiple GUI programs like firefox, notepad, dolphin ( whatever you want
)

soon or later ( it can take hours or even days ) something  will go wrong, the
first step is kaffeine who will show a black screen instead of a video image,
then the second step is a total freeze of KDE 4 and keyboard/mouse, the freeze
will last 30 seconds to 1 minute, then X will crash and automaticaly reboot,

what I am sure : if I disable "vdpau" feature in the configuration of Kaffeine
the bug will never occur, "vdpau" seems to be the key element in my
configuration for this bug

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