[Bug 967905] Re: Xorg using excessive CPU

[Jane Atkinson]

This *may* be related, though I'm not 100% sure.

Today, I was running updates in synaptic and writing an email in
Thunderbird at the same time.

I selected some text and tried to drag it to a new position in the
email. X completely locked up. I could move the mouse pointer but
couldn't click on anything. Ctrl-alt-backspace (I have it set to kill
the X server) did nothing.

Alt-sysrq-REISUB brought about a reboot, but a grub error ensued.
/dev/sdb (sata disk 2) had completely disappeared from the BIOS
listing!!

Disconnecting power entirely for a few minutes solved that problem. Had
something of this kind not happened to me previously, I'd have been in a
first-class panic.

Once the system was reloaded, the mouse pointer was still locked and
another reboot was needed to fix that.

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https://bugs.launchpad.net/bugs/967905

Title:
  Xorg using excessive CPU

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