Bug 74589
| Summary: | speedstep doesn't work on IBM ThinkPad T30 (pentium 4) | ||||||||||
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| Product: | [Retired] Red Hat Public Beta | Reporter: | Pam Huntley <pam_huntley> | ||||||||
| Component: | kernel | Assignee: | Arjan van de Ven <arjanv> | ||||||||
| Status: | CLOSED ERRATA | QA Contact: | Brian Brock <bbrock> | ||||||||
| Severity: | medium | Docs Contact: | |||||||||
| Priority: | medium | ||||||||||
| Version: | null | CC: | linux | ||||||||
| Target Milestone: | --- | ||||||||||
| Target Release: | --- | ||||||||||
| Hardware: | i386 | ||||||||||
| OS: | Linux | ||||||||||
| Whiteboard: | |||||||||||
| Fixed In Version: | Doc Type: | Bug Fix | |||||||||
| Doc Text: | Story Points: | --- | |||||||||
| Clone Of: | Environment: | ||||||||||
| Last Closed: | 2002-10-17 09:22:44 UTC | Type: | --- | ||||||||
| Regression: | --- | Mount Type: | --- | ||||||||
| Documentation: | --- | CRM: | |||||||||
| Verified Versions: | Category: | --- | |||||||||
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |||||||||
| Cloudforms Team: | --- | Target Upstream Version: | |||||||||
| Embargoed: | |||||||||||
| Attachments: |
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Created attachment 77425 [details]
cpuinfo
Created attachment 77426 [details]
dmesg output while booting from ac power
Created attachment 77427 [details]
output of dmesg while booting on battery power
if you can re-compile the kernel, change line 413 of
linux/arch/i386/kernel/speedstep.c from
if (msr_hi || ((msr_lo & 0x00FFFFFF) == 0x00300511) {
to
if (msr_hi || ((msr_lo & 0x00FFF000) == 0x00300000) {
re-compile, and it should work...
An errata has been issued which should help the problem described in this bug report. This report is therefore being closed with a resolution of ERRATA. For more information on the solution and/or where to find the updated files, please follow the link below. You may reopen this bug report if the solution does not work for you. http://rhn.redhat.com/errata/RHSA-2002-206.html I'm still seeing this problem on my T30 with the kernel-2.4.18-18.8.0 errata applied. My T30 has a 2.0 GHz processor: # cat /proc/cpuinfo processor : 0 vendor_id : GenuineIntel cpu family : 15 model : 2 model name : Mobile Intel(R) Pentium(R) 4 - M CPU 2.00GHz stepping : 7 cpu MHz : 1998.260 cache size : 512 KB fdiv_bug : no hlt_bug : no f00f_bug : no coma_bug : no fpu : yes fpu_exception : yes cpuid level : 2 wp : yes flags : fpu vme de pse tsc msr pae mce cx8 sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm bogomips : 3970.35 Intel seems to have produced a new stepping of P4-M - stepping 7. It's not in
their datasheets yet (as of December 2002), but I'm upgrading cpufreq now.
Arjan: somewhere in speedstep.c::speedstep_detect_processor you should find:
if (c->x86 == 0xF) {
/* Intel Pentium 4 Mobile P4-M */
if (c->x86_model != 2)
return 0;
if (c->x86_mask != 4)
return 0;
Please change the c->x86_mask check to:
if ((c->x86_mask != 4) && (c->x86_mask != 7))
return 0;
thx,
Dominik
done for next build/erratum; whenever that is |
Description of Problem: I get an error message when I try to modprobe speedstep on the IBM T30. It has a pentium 4 processor. Here is the output of modprobe: /lib/modules/2.4.18-11/kernel/arch/i386/kernel/speedstep.o: init_module: Input/output error Hint: insmod errors can be caused by incorrect module parameters, including invalid IO or IRQ parameters. You may find more information in syslog or the output from dmesg /lib/modules/2.4.18-11/kernel/arch/i386/kernel/speedstep.o: insmod /lib/modules/2.4.18-11/kernel/arch/i386/kernel/speedstep.o failed /lib/modules/2.4.18-11/kernel/arch/i386/kernel/speedstep.o: insmod speedstep failed I'm also attaching /proc/cpuinfo, and the output of dmesg when booted on both ac and battery power. This is with the stock kernel from a (null) installation.