[Mesa-dev] Resetting Video card without rebooting?

[Alex Deucher]

On Mon, Mar 17, 2014 at 11:36 AM, Dorrington, Albert
<albert.dorrington at lmco.com> wrote:
> I'm curious if there is any way to reset/restart the video card via Mesa or
> the libdrm drivers?
>
>
>
> I'm currently doing development against the OpenCL drivers, and getting the
> video card into a state where is will not respond.
>
> The only way I can get things cleaned up is by rebooting my Linux box, but I
> would think there would be some way to 'kick' the video card and get it to
> reinitialize.
>
>
>
> I'm running my Linux box headless, so I'm not worried about taking out the X
> display manager.

It depends on the driver.  Some drivers can attempt to reset the GPU
if a hang is detected.

Alex