I noticed this issue on my powerbook as well since upgrading to hardy (and I
happen to use the b43 driver);
I strace(1)ed the hald-addon-input process which was running at 100% cpu, and
noticed it was looping in a poll(2) call which returned POLLNVAL for one fd,
which turned out to be non-existent when inspecting the process with lsof(1):
strace output:
...
poll([{fd=5, events=POLLIN}, {fd=6, events=POLLIN}, {fd=9, events=POLLIN,
revents=POLLNVAL}, {fd=3, events=POLLIN}, {fd=8, events=POLLIN}, {fd=4,
events=POLLIN}], 6, -1) = 1
poll([{fd=5, events=POLLIN}, {fd=6, events=POLLIN}, {fd=9, events=POLLIN,
revents=POLLNVAL}, {fd=3, events=POLLIN}, {fd=8, events=POLLIN}, {fd=4,
events=POLLIN}], 6, -1) = 1
...(and so on)
lsof output:
...
hald-addo 4878 root 0r CHR 1,3 6625 /dev/null
hald-addo 4878 root 1u CHR 1,3 6625 /dev/null
hald-addo 4878 root 2u CHR 1,3 6625 /dev/null
hald-addo 4878 root 3u unix 0xef0b74e0 14102 socket
hald-addo 4878 root 4r CHR 13,69 12149 /dev/input/event5
hald-addo 4878 root 5w CHR 13,67 12054 /dev/input/event3
hald-addo 4878 root 6r CHR 13,66 11958 /dev/input/event2
hald-addo 4878 root 8r CHR 13,65 11900 /dev/input/event1
... (no fd=9 listed...)
hth
--
hald-addon-inpu making 100%-cpu-usage
https://bugs.launchpad.net/bugs/203679
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