Red Hat Bugzilla – Bug 250062
often pnp acpi does not find all devices
Last modified: 2007-11-30 17:12:11 EST
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User-Agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:18.104.22.168) Gecko/20070718 Fedora/22.214.171.124-1.fc7 Firefox/126.96.36.199
Description of problem:
About 50% to 75% of the time, pnp acpi states:
Jul 29 16:31:58 localhost kernel: pnp: PnP ACPI: found 12 devices
The rest of the times it states
Jul 29 16:40:50 localhost kernel: pnp: PnP ACPI: found 14 devices
When only 12 devices are found, my wacom serial tablet is not found, the setserial command fails and X won't start.
Hardware: Lenovo X61 tablet
Version-Release number of selected component (if applicable):
Steps to Reproduce:
2. Check /var/log/messages
3. Message: found N devices
4. If N=12 the problem is there, if N=14 it is not
Tablet is not found, setserial and X fails
Tablet should have been found and X should have started
It looks like a timeout of pnp ACPI that should be increased.
I'm reviewing this bug as part of the kernel bug triage project, an attempt to
isolate current bugs in the fedora kernel.
I am CC'ing myself to this bug and will try and assist you in resolving it if I can.
There hasn't been much activity on this bug for a while. Could you tell me if
you are still having problems with the latest kernel?
If the problem no longer exists then please close this bug or I'll do so in a
few days if there is no additional information lodged.
(In reply to comment #2)
> Hello Sander,
> I'm reviewing this bug as part of the kernel bug triage project, an attempt to
> isolate current bugs in the fedora kernel.
> I am CC'ing myself to this bug and will try and assist you in resolving it if
> I can.
> There hasn't been much activity on this bug for a while. Could you tell me if
> you are still having problems with the latest kernel?
I am running the latest FC7 kernel and the problem still exists.
I found out it is related to the docking station:
- If I boot from the docking station acpi finds 14 devices and all works fine.
- If I boot without docking station acpi finds 12 devices and wacom fails
Thanks for the update. Could you attach the following outputs as separate
# lspci -vvxxx (when docked)
dmesg without docking station
dmesg with docking station
lsmod after boot from docking station
lsmod after boot without docking station
I appreciate there is a lot there however this will enable me to assign the
relevant maintainer to the issue.
> Could you tell me if you are still having problems with the latest kernel?
This bug disappeared when I upgraded to kernel version 188.8.131.52-91.fc7.