System freeze after unloading rt2800pci

[bacchus]

System:
  PC:
    Acer emachines ER1402, Canonical "Ubuntu Certified"
  Affected hardware (lspci):
    04:00.0 Network controller: RaLink RT3090 Wireless 802.11n 1T/1R PCIe
  OS:
    Ubuntu 10.10, Kernel 2.6.35-26-generic-pae #46-Ubuntu SMP Sun Jan 30 08:27:58 UTC 2011 i686 GNU/Linux

Expected behavior:
Shutdown and reboot should work

What happens:
On shutdown or reboot the system freezes completely after the splash screen with a Ubuntu-purple blank screen (no keybord, no Magic Sysrequest key). Trying shutdown the running system with the Magic Sysrequest key + R, E, I, S, U, O; the sytem freezes after 'E', on sending SIGTERM to all processes but Init showing an error message about the rt2800 module. Unloading rt2800pci from the running system (either rmmod -f or modprobe -r) generates a freeze showing a blank, purple screen. After blacklisting the rt2800pci kernel module everything, even wireless networking, works fine.

This bug is likely related to Bug #692696.

Please feel free to ask me for more information. Unfortunately, I can only test without effort until Friday evening as this PC is going to be my granny's computer ;-)

[Jeremy Foshee (jeremyfoshee)]

Hi bacchus,

Please be sure to confirm this issue exists with the latest development release of Ubuntu. ISO CD images are available from http://cdimage.ubuntu.com/daily/current/ . If the issue remains, please run the following command from a Terminal (Applications->Accessories->Terminal). It will automatically gather and attach updated debug information to this report.

apport-collect -p linux 715741

Also, if you could test the latest upstream kernel available that would be great. It will allow additional upstream developers to examine the issue. Refer to https://wiki.ubuntu.com/KernelMainlineBuilds . Once you've tested the upstream kernel, please remove the 'needs-upstream-testing' tag. This can be done by clicking on the yellow pencil icon next to the tag located at the bottom of the bug description and deleting the 'needs-upstream-testing' text. Please let us know your results.

Thanks in advance.

    [This is an automated message. Apologies if it has reached you inappropriately; please just reply to this message indicating so.]

[Wolfgang Kufner (wolfgangkufner)]

Hi bacchus,

this sounds like bug 662288 for which very recently a fix has been identified.

 affects ubuntu/linux
 status confirmed

[Wolfgang Kufner (wolfgangkufner)]

Setting this as a duplicate of the aforementioned bug.

 duplicate 662288

Thanks for your report. As said a fix has now been identified. It is
however not yet packaged, so it is only available to users who are
willing to do a (small) compile. A minimum of command line knowledge
should be sufficient to do so. See bug 662288 for details.

[bacchus (sebastian-hanss)]

Dear all,

thanks a lot for your effort! It is great to hear that a fix is under the way.

Cheers,
Sebastian