Ubuntu graphic stack roadmap update

Patrick Goetz pgoetz at mail.utexas.edu
Sat Jun 29 12:50:45 UTC 2013

On 6/28/2013 12:43 PM, ubuntu-devel-request at lists.ubuntu.com wrote:
> From: Oliver Grawert <ogra at ubuntu.com>
> Date: 6/28/2013 8:51 AM
> that still doesn't make it a problem of the flavour maintainers though,
> if it is a HW related bug in the display server it will affect all
> flavours which will raise attention as well as severity of that bug. i
> think it is simply wrong to assume that a switch to XMir will change
> anything here ...

Sorry, but this seems like a really naive statement.  HW-related bugs 
frequently are only exposed by some particular software operation. 
Right now it's hardware driver + X + openGL libs.  In the future it will 
be hardware driver + Mir + openGL + XMir.  That is, for Unity.  The 
Kubuntu people will need to worry about

    HW driver + X + openGL
    HW driver + Mir + openGL + XMir
    HW driver + Wayland + openGL

There are plenty of bugs which never seem to get fixed already under the 
less complex scenario; thinking that Mir + XMir is just a lateral shift 
which won't make the problem worse is wishful thinking.

In the long run, options and competition will result in a much better 
graphics subsystem.  Short term, there is likely to be a lot of pain and 
frustration, and pretending this won't be the case is going to lead to 
(even more) disgruntled users and developers.

Patrick Goetz

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