I had some more time to work on this problem. After more research and
reading more information I discovered that IOMMU was not enabled on my
system. To enable IOMMU I performed the following steps on my Ubuntu
Linux server:
sudo vi /etc/default/grub
Add “intel_iommu=on” to the
Matt Bruzek, this bug report is being closed due to your last comment
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1190120/comments/28
regarding this being addressed via kernel parameter. For future
reference you can manage the status of your own bugs by clicking on the
current status in
Matt Bruzek, could you please test the latest mainline kernel via
http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.12-trusty/ and advise
on the results?
** Summary changed:
- Kernel Oops - unable to handle kernel NULL pointer dereference; after unbind
of a PCI device
+ Unbind not working as
Christopher,
I downloaded and installed the mainline kerel v3.12 and tried the
sequence of commands leading to the unbind command.
This time the system hung, no kernel oops but the system was
unresponsive/locked up. I was unable to use any keystroke to gain
control of my system Ctrl+c failed as
Matt Bruzek, did this problem not occur in a release prior to Raring?
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https://bugs.launchpad.net/bugs/1190120
Title:
Unbind not working as expected
Status in “linux”
Christopher,
I have not tried this scenario in any release earlier than Raring 13.04.
A google search tells me that people have been using PCI passthrough on
Ubuntu since 2009. This problem does not seem to be related to PCI
passthrough only the unbind step.
--
You received this bug
** Changed in: linux (Ubuntu)
Status: Incomplete = Confirmed
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https://bugs.launchpad.net/bugs/1190120
Title:
Unbind not working as expected
Status in “linux”
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