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[Bug 1365855] Re: 100% cpu in Xorg when xorg is started via lightdm

To: desktop-packages@xxxxxxxxxxxxxxxxxxx
From: Launchpad Bug Tracker <1365855@xxxxxxxxxxxxxxxxxx>
Date: Tue, 11 Nov 2014 04:17:13 -0000
Reply-to: Bug 1365855 <1365855@xxxxxxxxxxxxxxxxxx>
Sender: bounces@xxxxxxxxxxxxx

[Expired for lightdm (Ubuntu) because there has been no activity for 60
days.]

** Changed in: lightdm (Ubuntu)
       Status: Incomplete => Expired

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https://bugs.launchpad.net/bugs/1365855

Title:
  100% cpu in Xorg when xorg is started via lightdm

Status in “lightdm” package in Ubuntu:
  Expired

Bug description:
  I see Xorg using 100% cpu when its running via lightdm.

  This is not the case if I start X via "startx" or when its run from lxdm or gdm. A strace from a VT shows constant activity (where gdm has only a select() waiting). Most notably this repeats:
  """
  select(256, [0 1 3 5 13 24 25 26], NULL NULL {417 413000}) = 1 (in [0], left {417, 412998})
  read(0, 0x7ffff2bef74a0, 1024) = -1 (Bad file descriptor)
  """
  (transcripted from the affected machine).

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