Hi, I have a problem with loading the powersaving kernel module p4-clockmod.ko. When I try inserting the module (via modprobe or insmod) I get
FATAL: Error inserting p4_clockmod (/lib/modules/2.6.31.8-mediaserver/extra/p4-clockmod.ko): Invalid module format
The module has been compiled together with the kernel. Other modules load with no problem at all.
I’ve tried recompiling the kernel (after re-installing the sources, make xconfig from scratch) - no avail. There’s only one kernel source package installed. Searching the forum and google didn’t yield a helping answer.
The weird thing is that it used to work previously. The only thing I changed was that I replaced the disk containing /home and my swap partition. But that really shouldn’t affect kernel modules, should it?
@caf4926
Yes, I did update my fstab accordingly. Here’s the output:
# fdisk -l
Disk /dev/sda: 8019 MB, 8019099648 bytes
255 heads, 63 sectors/track, 974 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk identifier: 0x00044733
Device Boot Start End Blocks Id System
/dev/sda1 * 1 974 7823623+ 83 Linux
Disk /dev/sdb: 128.0 GB, 128035676160 bytes
255 heads, 63 sectors/track, 15566 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk identifier: 0xb09c1668
Device Boot Start End Blocks Id System
/dev/sdb1 1 132 1060258+ 82 Linux swap / Solaris
/dev/sdb2 133 15566 123973605 83 Linux
Else I just build a kmp module via build service (rpm). Looking at the
config data, it is recommended to use speedstep.
config X86_P4_CLOCKMOD
tristate "Intel Pentium 4 clock modulation"
select CPU_FREQ_TABLE
help
This adds the CPUFreq driver for Intel Pentium 4 / XEON
processors. When enabled it will lower CPU temperature by
skipping clocks.
This driver should be only used in exceptional
circumstances when very low power is needed because it causes
severe slowdowns and noticeable latencies. Normally
Speedstep should be used instead.
To compile this driver as a module, choose M here: the
module will be called p4-clockmod.
For details, take a look at <file:Documentation/cpu-freq/>.
Unless you are absolutely sure say N.
I wonder if you had a bad kernel build, did you nohup the output to
review any errors?
–
Cheers Malcolm °¿° (Linux Counter #276890)
SUSE Linux Enterprise Desktop 11 (x86_64) Kernel 2.6.27.39-0.3-default
up 4 days 14:20, 4 users, load average: 0.13, 0.31, 0.22
GPU GeForce 8600 GTS Silent - CUDA Driver Version: 190.18
I actually did ‘make’ as root :’( - didn’t know that this could cause problems. I’ve been doing that since I don’t know when and it always completed without any problems. There weren’t any obvious problems this time as well.
However, I will take this into account and try again as a regular user. I usually did my kernel compilations using the “current” kernel config. Only this time I tried with a config from scratch because I imagined that could have caused the problem.
I rebuilt the kernel as non-root now. Unfortunately, that didn’t change anything. I tried inserting the acpi_cpufreq module as an alternative, but the same problem: invalid module format…
I think I’ll now try cpufreq-info on the stock kernel.
I found the problem! You wouldn’t believe it. There was a spurious directory ‘/lib/modules/2.6.31.8-mediaserver/extra’ containing an older module version. I didn’t notice because modinfo said it has the correct version. When I scanned the kernel/arch/… directories I found there actually was the correct module there. Removing the ‘extra’ directory and depmod then did the trick.
I’m really sorry to have bothered you. I should have noticed. Mea culpa…
