desktop-packages team mailing list archive

[Andreas Pokorny <andreas.pokorny@xxxxxxxxxxxxx>]

Public bug reported:

There is a bugfix in 10.3.1 that will fix dma-buf handling in i915. So
we would like to see the newest minor release of mesa, which is 10.3.1
This will fix:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1275398 and
basically enable i915 devices to run mir.

[Impact]

 * The bug leads to crashes in unity8 on i915 and to crashes or 'black
buffers' on mir clients.

 * This is not a request for back porting but a request to pick the next
minor bugfix release of mesa.

[Test Case]

 * Install mir-demos on a intel atom netbook or a pentium d system
 * sudo mir_demo_server_basic --vt 2 --file /tmp/mir_socket
 * sudo chmod 666 /tmp/mir_socket
 * mir_demo_client_eglplasma -m /tmp/mir_socket
 * then vt switch to vt 1
 * expected yellowish plasma animation, error: eglplasma crashing or just showing a black buffer

[Regression Potential]

 * Instead of immediately crashing unity8s desktop session it will make
the primary client of unity8: unity8-dash fail to start due to
insufficient GL support on the mesa driver - but that is a different
error.

 * 10.3.1 introduces the bespoke i915 bug fix, and further driver local fixes to nouveau for the kepler ir, shutdown leak fixes for radeon and a division by zero fix for llvmpipe. A fix to glsl that first manifested in i965. Apart from that build system cleanups for building mesa for android and detecting LLVM.
 * the fix to glsl has impact on i965
 * fixes for intel are local to i915 and will not cause regression
 * fixes to radeon should only touch shutdown code
 * fixes to nouveau should be local to kepler gpus 

[Other Info]
 
 * The switch to this mesa release will not enable mir. But it will not enable unity8 on pentium D and atom, but it will be a step towards that

** Affects: mesa (Ubuntu)
     Importance: Undecided
         Status: New

-- 
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Packages, which is subscribed to mesa in Ubuntu.
https://bugs.launchpad.net/bugs/1384289

Title:
  mesa 10.3.1 required for mir

Status in “mesa” package in Ubuntu:
  New

Bug description:
  There is a bugfix in 10.3.1 that will fix dma-buf handling in i915. So
  we would like to see the newest minor release of mesa, which is 10.3.1
  This will fix:
  https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1275398 and
  basically enable i915 devices to run mir.

  [Impact]

   * The bug leads to crashes in unity8 on i915 and to crashes or 'black
  buffers' on mir clients.

   * This is not a request for back porting but a request to pick the
  next minor bugfix release of mesa.

  [Test Case]

   * Install mir-demos on a intel atom netbook or a pentium d system
   * sudo mir_demo_server_basic --vt 2 --file /tmp/mir_socket
   * sudo chmod 666 /tmp/mir_socket
   * mir_demo_client_eglplasma -m /tmp/mir_socket
   * then vt switch to vt 1
   * expected yellowish plasma animation, error: eglplasma crashing or just showing a black buffer

  [Regression Potential]

   * Instead of immediately crashing unity8s desktop session it will
  make the primary client of unity8: unity8-dash fail to start due to
  insufficient GL support on the mesa driver - but that is a different
  error.

   * 10.3.1 introduces the bespoke i915 bug fix, and further driver local fixes to nouveau for the kepler ir, shutdown leak fixes for radeon and a division by zero fix for llvmpipe. A fix to glsl that first manifested in i965. Apart from that build system cleanups for building mesa for android and detecting LLVM.
   * the fix to glsl has impact on i965
   * fixes for intel are local to i915 and will not cause regression
   * fixes to radeon should only touch shutdown code
   * fixes to nouveau should be local to kepler gpus 

  [Other Info]
   
   * The switch to this mesa release will not enable mir. But it will not enable unity8 on pentium D and atom, but it will be a step towards that

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