On Don, 2011-03-10 at 12:38 +0000, Thue Janus Kristensen wrote:
> "finish" doesn't display the return value, because there is no debug
> symbols.
Install libdrm2-dbg? :)
> A random page on the Internet said that the return value is probably
> in eax. Doing
>
>
> > print $eax
>
>
> after "finish" on drmDropMaster on the second X server, I get the
> value "-1".
Can you get the value of errno as well?
This does indicate that the DRM_IOCTL_DROP_MASTER may be failing, which
could explain the problem. The question why it would fail. Looking at
drm_dropmaster_ioctl() in the kernel, I think the only relevant case is
if (!file_priv->minor->master)
return -EINVAL;
but I don't know how file_priv->minor->master could be NULL.
--
Earthling Michel Dänzer | http://www.vmware.com
Libre software enthusiast | Debian, X and DRI developer
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