kernel-packages team mailing list archive

[Peter Júnoš <1363384@xxxxxxxxxxxxxxxxxx>]

Public bug reported:

Hi,

after upgrade to utopic, regular freezes for some seconds to some
minutes appeared. Using custom kernel compiled from provided source of
3.16.0-11.16 with CONFIG_DMA_CMA=n solves the problem.

Linux freezes with up-to-date linux-image from repository (version
3.16.0-11.16). It doesn't matter, whether I use radeon or vesa driver.

Discussion about the bug in either X or kernel happened on
http://lists.freedesktop.org/archives/dri-devel/2014-August/065842.html

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

** Attachment added: "lspci"
   https://bugs.launchpad.net/bugs/1363384/+attachment/4190754/+files/lspci-vnvn.log

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https://bugs.launchpad.net/bugs/1363384

Title:
  CONFIG_DMA_CMA causes performance problems

Status in “linux” package in Ubuntu:
  New

Bug description:
  Hi,

  after upgrade to utopic, regular freezes for some seconds to some
  minutes appeared. Using custom kernel compiled from provided source of
  3.16.0-11.16 with CONFIG_DMA_CMA=n solves the problem.

  Linux freezes with up-to-date linux-image from repository (version
  3.16.0-11.16). It doesn't matter, whether I use radeon or vesa driver.

  Discussion about the bug in either X or kernel happened on
  http://lists.freedesktop.org/archives/dri-devel/2014-August/065842.html

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