Ubuntu
hal package

Suspend and hotswapping problems caused by hald-addon-storage

Bug #62239 reported by Rob Frohne
2
Affects Status Importance Assigned to Milestone
hal (Ubuntu)
New
Undecided
Unassigned

Bug Description

On this Dell D600 laptop, if I kill the hald-addon-storage process immediately after booting I can suspend and hibernate as many times as I like. I can also hotswap the removable CDRW/DVD without locking up the system. If I suspend without killing hald-addon-storage, it works the first time. About half the time after waking up, the hald-addon-storage process is D instead of S in the output of ps, meaning it is an uninterruptible sleep process. If that happens, I can sometimes get it to change to S (interruptable sleep) by ejecting and re-inserting a CD. If I use the ati (open source) graphics drivers, I can continue to sleep and wake as long as the process is not D when I suspend. If I use the fglrx (closed source) driver, I can only wake up once correctly if I suspend with the hald-addon-storage process is running when I suspend, even if the process is S. If I boot with the CD/DVD rom not inserted in the side of the laptop, I can suspend as many times as I like.

I would be glad to test more if it is helpful.

Revision history for this message
Rob Frohne (frohro) wrote : Re: [Bug 62239] Re: Suspend and hotswapping problems caused by hald-addon-storage

Hi Martin,

I suppose this is related partly to bug 58935, but unfortunately, after
testing further, I find that the problem wasn't solved by having only
one hald-addon-storage process instead of two. What having only one
process did, was drop the probability in half roughly of the problem
occurring. I can drop the probability to zero by killing all
hald-addon-storage processes. Please read the follow-up to my original
post. I probably should have done some more testing before I posted the
first time.

Thanks,

Rob

Martin Pitt wrote:
> *** This bug is a duplicate of bug 58935 ***
>
> ** This bug has been marked a duplicate of bug 58935
> two hald-addon-storage processes per pooled device
>
>

--
Rob Frohne, Ph.D., P.E.
E.F. Cross School of Engineering
Walla Walla College
100 SW 4th Street
College Place, WA 99324
(509) 527-2075 http://www.wwc.edu/~frohro

Revision history for this message
Rob Frohne (frohro) wrote :

I solved the problems by removing the cdrom driver before suspending, and having it reinserted afterwards. You do this by editing /etc/default/acpi-support to have the following:

# Note that network cards and USB controllers will automatically be unloaded
# unless they're listed in MODULES_WHITELIST
#MODULES=""
MODULES="cdrom"

Now suspend and hibernate work fine, and the processes don't become zombies.

Rob

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