apport information ** Tags added: apport-collected natty
** Description changed: I have an IBM Thinkpad T40p with a Pentium M 755 2.0 GHz CPU. After upgrading to Ubuntu 11.04 from 10.10 the CPU is incorrectly underclocked to 598 MHz and cannot be adjusted, manually or automatically. When I boot off the old 10.10 live CD, or boot from a previous kernel (2.6.35-29-generic) saved from my 10.10 install, CPU scaling and all the governors work again perfectly. The 11.04 live CD however has the same problem. I've tried loading every possible scaling module I could think of (acpi- cpufreq, speedstep-centrino, p4-clockmod, cpufreq_ondemand) and tried multiple scaling daemons and programs with no luck at all. I'm stuck at what to try next. The Gnome Panel CPU Scaling monitor says "CPU frequency scaling unsupported" and here is the output of various commands: $ cpufreq-info cpufrequtils 007: cpufreq-info (C) Dominik Brodowski 2004-2009 Report errors and bugs to [email protected], please. analyzing CPU 0: no or unknown cpufreq driver is active on this CPU maximum transition latency: 0.00 ms. $ sudo /etc/init.d/cpufrequtils start * CPUFreq Utilities: Setting ondemand CPUFreq governor... * disabled, governor not available... $ cat /proc/cpuinfo processor : 0 vendor_id : GenuineIntel cpu family : 6 model : 13 model name : Intel(R) Pentium(R) M processor 2.00GHz stepping : 8 cpu MHz : 597.949 cache size : 2048 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 mtrr pge mca cmov clflush dts acpi mmx fxsr sse sse2 ss tm pbe nx up bts est tm2 bogomips : 1195.89 clflush size : 64 cache_alignment : 64 address sizes : 32 bits physical, 32 bits virtual power management: $ ls -h /sys/devices/system/cpu cpu0 cpufreq cpuidle kernel_max offline online possible present probe release $ ls -h /sys/devices/system/cpu/cpu0 cpuidle crash_notes topology $ ls -lh /sys/devices/system/cpu/cpufreq total 0 $ ls -h /sys/devices/system/cpu/cpuidle current_driver current_governor_ro $ cat /sys/devices/system/cpu/cpuidle/* acpi_idle menu $ dmesg | grep -i cpu [ 0.000000] Initializing cgroup subsys cpuset [ 0.000000] Initializing cgroup subsys cpu [ 0.000000] PAT not supported by CPU. [ 0.000000] SMP: Allowing 1 CPUs, 0 hotplug CPUs [ 0.000000] setup_percpu: NR_CPUS:8 nr_cpumask_bits:8 nr_cpu_ids:1 nr_node_ids:1 [ 0.000000] PERCPU: Embedded 13 pages/cpu @f5800000 s28800 r0 d24448 u4194304 [ 0.000000] pcpu-alloc: s28800 r0 d24448 u4194304 alloc=1*4194304 [ 0.000000] pcpu-alloc: [0] 0 [ 0.000000] Initializing CPU#0 [ 0.000000] SLUB: Genslabs=15, HWalign=64, Order=0-3, MinObjects=0, CPUs=1, Nodes=1 [ 0.000000] RCU-based detection of stalled CPUs is disabled. [ 0.000000] CPU 0 irqstacks, hard=f5406000 soft=f5408000 [ 0.008754] Initializing cgroup subsys cpuacct [ 0.008939] mce: CPU supports 5 MCE banks [ 0.060134] weird, boot CPU (#0) not listed by the BIOS. [ 0.064798] Brought up 1 CPUs [ 0.216353] Switched to NOHz mode on CPU #0 [ 0.220886] cpufreq-nforce2: No nForce2 chipset. [ 0.326754] ACPI: acpi_idle registered with cpuidle [ 0.605330] cpuidle: using governor ladder [ 0.605536] cpuidle: using governor menu $ uname -a Linux dep 2.6.38-9-generic #43-Ubuntu SMP Thu Apr 28 15:25:15 UTC 2011 i686 i686 i386 GNU/Linux $ cat /etc/lsb-release DISTRIB_ID=Ubuntu DISTRIB_RELEASE=11.04 DISTRIB_CODENAME=natty DISTRIB_DESCRIPTION="Ubuntu 11.04" + --- + AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.23. + Architecture: i386 + CRDA: Error: [Errno 2] No such file or directory + Card0.Amixer.info: + Card hw:0 'I82801DBICH4'/'Intel 82801DB-ICH4 with AD1981B at irq 5' + Mixer name : 'Analog Devices AD1981B' + Components : 'AC97a:41445374' + Controls : 26 + Simple ctrls : 18 + Card29.Amixer.info: + Card hw:29 'ThinkPadEC'/'ThinkPad Console Audio Control at EC reg 0x30, fw 1RHT71WW-3.04' + Mixer name : 'ThinkPad EC 1RHT71WW-3.04' + Components : '' + Controls : 2 + Simple ctrls : 1 + Card29.Amixer.values: + Simple mixer control 'Console',0 + Capabilities: pvolume pvolume-joined pswitch pswitch-joined penum + Playback channels: Mono + Limits: Playback 0 - 14 + Mono: Playback 5 [36%] [on] + DistroRelease: Ubuntu 11.04 + LiveMediaBuild: Ubuntu 11.04 "Natty Narwhal" - Release i386 (20110427.1) + MachineType: IBM 23735U5 + Package: linux (not installed) + PccardctlIdent: + Socket 0: + no product info available + Socket 1: + product info: "PSCR", "Smart Card Reader", "V2.0", "" + manfid: 0xffff, 0x0001 + PccardctlStatus: + Socket 0: + 3.3V 32-bit PC Card + Socket 1: + 5.0V 16-bit PC Card + Subdevice 0 (function 0) [unbound] + ProcEnviron: + LANGUAGE=en_US:en + LANG=en_US.UTF-8 + SHELL=/bin/bash + ProcKernelCmdLine: file=/cdrom/preseed/hostname.seed boot=casper initrd=/casper/initrd.lz quiet splash -- maybe-ubiquity + ProcVersionSignature: Ubuntu 2.6.38-8.42-generic 2.6.38.2 + RelatedPackageVersions: + linux-restricted-modules-2.6.38-8-generic N/A + linux-backports-modules-2.6.38-8-generic N/A + linux-firmware 1.52 + RfKill: + 0: phy0: Wireless LAN + Soft blocked: no + Hard blocked: no + Tags: natty + Uname: Linux 2.6.38-8-generic i686 + UpgradeStatus: No upgrade log present (probably fresh install) + UserGroups: adm admin cdrom dialout lpadmin plugdev sambashare + dmi.bios.date: 06/18/2007 + dmi.bios.vendor: IBM + dmi.bios.version: 1RETDRWW (3.23 ) + dmi.board.name: 23735U5 + dmi.board.vendor: IBM + dmi.board.version: Not Available + dmi.chassis.asset.tag: No Asset Information + dmi.chassis.type: 10 + dmi.chassis.vendor: IBM + dmi.chassis.version: Not Available + dmi.modalias: dmi:bvnIBM:bvr1RETDRWW(3.23):bd06/18/2007:svnIBM:pn23735U5:pvrThinkPadT40p:rvnIBM:rn23735U5:rvrNotAvailable:cvnIBM:ct10:cvrNotAvailable: + dmi.product.name: 23735U5 + dmi.product.version: ThinkPad T40p + dmi.sys.vendor: IBM ** Attachment added: "AcpiTables.txt" https://bugs.launchpad.net/bugs/797190/+attachment/2168532/+files/AcpiTables.txt -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/797190 Title: Ubuntu 11.04 Natty upgrade underclocks and disables CPU scaling To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/797190/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
