Public bug reported:
When using suspend-to-ram the events/0 process can sometimes utilize
around100% CPU after resuming. When this happens, no wireless
communication is possible, and other processes are severely slowed down.
Using the radio kill switch disables my wifi card, and reduces the CPU
usage to around 0%. Of course, then the kill switch is enabled, so still
no wireless communication is possible. Unloading and reloading the b43
kernel module doesn't solve this issue. A complete reboot does solve it.
I have removed the b43 kernel module before suspending, and loaded it
after resuming. Unfortunately, that doesn't solve the issue.
This issue does not happen at every suspend/resume cycle. When it does
happen, most of the time it's events/0 that trashes the CPU, but
sometimes it's events/1.
I'm running Ubuntu 8.10 on a Medion Akoya 10" laptop with a Broadcom
Corporation BCM4312 802.11a/b/g (rev 01) wireless card.
$ uname -a
Linux itty 2.6.27-7-generic #1 SMP Tue Nov 4 19:33:20 UTC 2008 i686 GNU/Linux
Output from "lspci -vvnn" and "dmesg" will be attached.
** Affects: linux (Ubuntu)
Importance: Undecided
Status: New
--
Wifi (b43) sometimes causes events/0 to use near-100% CPU after suspend/resume
cycle
https://bugs.launchpad.net/bugs/298717
You received this bug notification because you are a member of Ubuntu
Bugs, which is subscribed to Ubuntu.
--
ubuntu-bugs mailing list
[email protected]
https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
