Re: kldload uhci lockup

2012-05-14 Thread Jakub Lach
Here we go again...

After attempting to load those modules xterm hang, 
top was locked up, couldn't select anything to buffer 
in xterm, bell rang consistently BUT..

Other xterm was responsive and I managed to grab
screenshot and vmstat -i. 

After forced shutdown, journaled filesystems were 
marked clean, however as I saw 'free inodes' in syslog, 
I shut system down again and ran fsck in single user mode. 

As predicted inconsistencies showed up, after clearing
those up, still in syslog some free inodes showed up
and opera was broken (reverted to default layout, good
I had bookmarks backed up) as usually in cases when
not cleanly shut down. 

So I'm overall disappointed in journalled UFS2, there were
no forced shutdown that hasn't left me without inconsistencies, 
and usually opera is clearly broken most times, because it's 
running always and using disk space.. And this could be the 
case with more important services too.

Here is screenshot:

wow...  looks like it was one of those files that couldn't make 
it after shutdown... it's missing anyway.

FWIW, vmstat -i was not showing rapidly increasing interrupts, 
and offending command was something like 

$ sudo kldload usb ums ahci uhci

So still nothing new.

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Re: kldload uhci lockup

2012-04-17 Thread Jakub Lach
VERY hard to reproduce :(

Will try to vmstat -i next time (hope not
on FreeBSD 11-STABLE).

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kldload uhci lockup

2012-04-16 Thread Jakub Lach
I observed that following could cause
machine lockup since at least 8-CURRENT.

Now I'm on 9-STABLE

No usb in kernel, attached mouse pointer. 

# kldload usb ums ehci
# kldload uhci

or 

# kldload uhci usb ums ehci

uhci is required for working mouse.

Can anyone confirm? Please
test few different iterations, as 
it's probably not easily reproducible.

Most times nothing happens, if machine
slow downs to crawl/halt , it's on uhci 
loading stage I suppose. 

Best if somebody could pin this down 
on their machine, as I don't have time
to debug this now/would have to alter
my configuration considerably.

best regards, 
- Jakub Lach

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