Latest working kernel version: 2.6.18 Earliest failing kernel version: Distribution: Fedora 10 Hardware Environment: ASRock 775dual-880Pro - VIA PT880 Pro Software Environment: Problem Description: After a few minutes the system freezes. With acpi=off the system behaves as normal but without scaling cpu frequency. I can use it with ACPI but disabling Speedstep on my BIOS (again, no scaling). With kernel 2.6.18 I have no freezes but the frequency doesn't scale down. I've the same problem with Ubuntu, with or without the NVidia modules. Steps to reproduce: Boot a system with kernel > 2.6.18, after a few minutes (varying) the system freezes
will you please boot the syste with acpi disabled and attach the output of acpidump? (The speedstep should be enabled in BIOS). Will you please try the following boot options with ACPI enabled and see whether the system still freezes? (The speedstep should be enabled in BIOS). a. idle=poll b. processor.max_cstate=1 Thanks.
Created attachment 19254 [details] log of acpidump and Speedstep enabled BIOS Speedstep enabled. kernel option: acpi=off command: acpidump -o acpidump.log now i try with idle=off and the processor.max_cstate=1 options
a. idle=poll ---> system freeze b. processor.max_cstate=1 ---> system freeze
please attach the result of "grep . /sys/devices/system/cpu/cpu0/cpufreq/*" please attach the lspci and acpidump output. please clear CONFIG_CPU_FREQ, rebuild the kernel and see if it helps.
log of acpidump already posted: kernel boot command acpi=off, BIOS with speedstep enabled
With ACPI and cpufreq enabled, please paste the output of this command sequence: # cd /sys/devices/system/cpu # grep . */cpufreq/* also. please attach the output from $ dmesg -s64000 and paste the output from $ cat /proc/cpuinfo
Created attachment 19272 [details] cpuinfo
Created attachment 19273 [details] dmesg
Created attachment 19274 [details] grep cpufreq
Created attachment 19275 [details] lspci
what will happen if you set the cpu frequency manually? i.e. does the system freeze if you "echo performance > /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor"? please run "acpidump --addr 0x3ffb4130 --length 0x2e3 -o stbl0" "acpidump --addr 0x3ffb4420 --length 0x2da -o stbl1" and attach the stbl0 and stbl1 here.
Created attachment 19312 [details] acpidump stbl0
Created attachment 19313 [details] acpidump stbl1
I've put cpu0 and cpu1 on "performance" (e.g. 3GHz) and the system is still alive.
does it freeze after a few minutes? what if you put the cpus to "userspace" and set the frequency to 2.8G? does it freeze after a few minutes? if both of them freeze, please clear CONFIG_CPU_FREQ, rebuild the kernel and see if it can be reproduced.
no freeze with performance or userspace I've put it on userspace and "echo 2800000" on all cpus and the system is still usable.
Hi, Dome Does the system still freeze if the system is booted with "maxcpus=1"? Thanks.
Hi. with maxcpus=1 the system is usable.
does the problem still exist in the latest git kernel? say 2.6.30-rc7 If yes, would you please use the usespace governor and set one cpu to 2800000 and another to 3000000 and see if the problem can be reproduced?
no response from the bug reporter. please re-open this bug if the problem still exists in the latest git kernel.