[Intel-gfx] Mouse cursor disappearing with SNA rendering

[Chris Wilson]

On Fri, Jun 17, 2016 at 05:08:55PM +0800, Daniel J Blueman wrote:
> Hi all!
> 
> When unlocking from lightdm, the mouse cursor isn't visible until
> switching VTs. This doesn't occur when using UXA rendering mode
> though, and affects a *lot* of people [1]. It occurs with a range of
> kernels including 4.6.2.
> 
> I'm using xserver-xorg-video-intel 2:2.99.917+git20160325-1ubuntu1
> (current in Ubuntu 16.04 LTS).
> 
> How can I approach debugging it?

Start with a kernel from about 3.19. The trigger was introduced by
xorg-server-1.18.3 which double applied a SETCURSOR ioctl. That should
have been a noop...
-Chris

-- 
Chris Wilson, Intel Open Source Technology Centre