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[Bug 761065] Re: [Sandybridge] Spurious "*ERROR* Hangcheck timer elapsed... blt ring idle" messages in dmesg when using compiz

 

Fix #16 works fine so far here (2.6.38-8-generic, X220, i7-2620M
Sandybridge). Thanks!

However, I'm additionally affected by #22 (4): I cannot dock/undock the
X220 with the Lenovo Minidock Plus where I have 2 screens attached via
display port. With a fresh boot there are initially some issues with the
desktop background, which vanish after starting an app in full screen
mode. However, switching between the display setups (undocked = notebook
display, docked = 2 externals) is not possible without reboot).

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https://bugs.launchpad.net/bugs/761065

Title:
  [Sandybridge] Spurious "*ERROR* Hangcheck timer elapsed... blt ring
  idle" messages in dmesg when using compiz

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