Bug 144331

Summary:	powernow-k8 doeasn't load
Product:	[openSUSE] SUSE Linux 10.1	Reporter:	Marian Jancar <mjancar>
Component:	Kernel	Assignee:	Thomas Renninger <trenn>
Status:	RESOLVED INVALID	QA Contact:	E-mail List <qa-bugs>
Severity:	Normal
Priority:	P5 - None
Version:	Alpha 4
Target Milestone:	---
Hardware:	x86-64
OS:	Other
Whiteboard:
Found By:	Development	Services Priority:
Business Priority:		Blocker:	---
Marketing QA Status:	---	IT Deployment:	---
Attachments:	acpidmp dmesg

Description Marian Jancar 2006-01-20 11:46:32 UTC

powewnow-k8 desn't load with the new kernel, worked fine in 10.0

epsilon:~ # modprobe powernow-k8
FATAL: Error inserting powernow_k8 (/lib/modules/2.6.15-rc5-git3-2-default/kernel/arch/x86_64/kernel/cpufreq/powernow-k8.ko): No such device
epsilon:~ # dmesg | grep powernow
powernow-k8: Found 1 AMD Athlon 64 / Opteron processors (version 1.50.4)
powernow-k8: BIOS error - no PSB or ACPI _PSS objects

Comment 1 Thomas Renninger 2006-01-20 12:41:24 UTC

Ohh, probably ACPI, could you post dmesg and acpidmp output, please.

Comment 2 Marian Jancar 2006-01-20 14:27:50 UTC

Created attachment 64281 [details]
acpidmp

Comment 3 Marian Jancar 2006-01-20 14:28:33 UTC

Created attachment 64282 [details]
dmesg

Comment 4 Pavel Machek 2006-01-20 16:18:56 UTC

Nvidia is loaded, so this is INVALID.

If you can reproduce it without nvidia, it would be interesting to insert printks to see where it fails.

Comment 5 Marian Jancar 2006-01-20 18:52:21 UTC

The powernow-k8 is loaded (and fails) before the nvidia, there is other stuff that taints the kernel before the powernow, I will try to reproduce without.

Comment 6 Thomas Renninger 2006-02-03 11:47:33 UTC

Seems as if an ACPI bug slipped in since 10.0 so that the cpufreq tables are not found any more.
Could you try latest kotd, please, there are a lot ACPI changes.
If it still does not work, do you see any suspicious ACPI errors in dmesg?
If not can you build a kernel with ACPI_DEBUG enabled, please.
If the loading of powernow-k8 still does not reveal any ACPI error messages, you can play a bit with /proc/acpi/debug_level and try to reload the module.

Comment 7 Thomas Renninger 2006-02-03 12:32:32 UTC

You probably have modified something in BIOS and disabled cpufreq?
DSDT contains no _PSS entries, this cannot work ...

Comment 8 Marian Jancar 2006-02-03 12:39:17 UTC

I just upgraded to STABLE kernel. It does the same on my home machine, with 9.3 kernel it worked and now it does not, the GNOME cpufreq applet was showing ~1-1.8Gzh depending on the load, now it refuses even to start.

Comment 9 Thomas Renninger 2006-02-03 12:53:38 UTC

Please check your BIOS settings, maybe you modified the PowerNow! settings by accident?
There are no changes in the powernow-k8 driver concerning initialisation by PSB tables (I thought they were never used?).
The ACPI BIOS misses the cpufreq important parts (_PSS func), so I expect you changed the BIOS settings if it already worked?

Can you be 100% sure cpufreq worked with 9.3?
If you do not have PowerNow/cpufreq settings in BIOS, maybe you should first search for a BIOS update.

Comment 10 Marian Jancar 2006-02-05 11:59:17 UTC

You are right, it was disabled on my home machine. Sorry for the confusion.