I've been receiving "BUG: soft lockup - CPU#0 stuck for 11s! [kacpi_notify:45]" regularly since I upgrade to 8.04 and its degrading my server's performance considerably.
In case anyone is unaware of what happens when there is a soft lockup, I am unable to run any commands via SSH or tty1. It'll catch up what I typed, but I'm just lucky this is a backup server and not a high performance one! I'm hoping someone can help me diagnose the cause because this error did not occur when I had 7.04 and 7.10 installed. $ lspci: 00:00.0 Host bridge: Intel Corporation 82845G/GL[Brookdale-G]/GE/PE DRAM Controller/Host-Hub Interface (rev 03) 00:02.0 VGA compatible controller: Intel Corporation 82845G/GL[Brookdale-G]/GE Chipset Integrated Graphics Device (rev 03) 00:1d.0 USB Controller: Intel Corporation 82801DB/DBL/DBM (ICH4/ICH4-L/ICH4-M) USB UHCI Controller #1 (rev 02) 00:1d.1 USB Controller: Intel Corporation 82801DB/DBL/DBM (ICH4/ICH4-L/ICH4-M) USB UHCI Controller #2 (rev 02) 00:1d.2 USB Controller: Intel Corporation 82801DB/DBL/DBM (ICH4/ICH4-L/ICH4-M) USB UHCI Controller #3 (rev 02) 00:1d.7 USB Controller: Intel Corporation 82801DB/DBM (ICH4/ICH4-M) USB2 EHCI Controller (rev 02) 00:1e.0 PCI bridge: Intel Corporation 82801 PCI Bridge (rev 82) 00:1f.0 ISA bridge: Intel Corporation 82801DB/DBL (ICH4/ICH4-L) LPC Interface Bridge (rev 02) 00:1f.1 IDE interface: Intel Corporation 82801DB (ICH4) IDE Controller (rev 02) 00:1f.3 SMBus: Intel Corporation 82801DB/DBL/DBM (ICH4/ICH4-L/ICH4-M) SMBus Controller (rev 02) 00:1f.5 Multimedia audio controller: Intel Corporation 82801DB/DBL/DBM (ICH4/ICH4-L/ICH4-M) AC'97 Audio Controller (rev 02) 02:02.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL-8139/8139C/8139C+ (rev 10) 02:0a.0 Communication controller: Agere Systems LT WinModem (rev 02) $ tail /var/log/syslog, tail /var/log/messages, tail /var/log/kern.log (all the same) and it seems to occur every two seconds or so Jun 21 16:58:49 backupserver kernel: [ 1727.373171] ACPI: Unable to turn cooling device [f7c442a0] 'off' Jun 21 16:58:49 backupserver kernel: [ 1727.377371] ACPI: Transitioning device [FAN1] to D3 Jun 21 16:58:49 backupserver kernel: [ 1727.377375] ACPI: Transitioning device [FAN1] to D3 Jun 21 16:58:49 backupserver kernel: [ 1727.377378] ACPI: Unable to turn cooling device [f7c442a0] 'off' Jun 21 16:58:49 backupserver kernel: [ 1727.381573] ACPI: Transitioning device [FAN1] to D3 Jun 21 16:58:49 backupserver kernel: [ 1727.381576] ACPI: Transitioning device [FAN1] to D3 Jun 21 16:58:49 backupserver kernel: [ 1727.381579] ACPI: Unable to turn cooling device [f7c442a0] 'off' Jun 21 16:58:49 backupserver kernel: [ 1727.385781] ACPI: Transitioning device [FAN1] to D3 Jun 21 16:58:49 backupserver kernel: [ 1727.385785] ACPI: Transitioning device [FAN1] to D3 Jun 21 16:58:49 backupserver kernel: [ 1727.385787] ACPI: Unable to turn cooling device [f7c442a0] 'off' $ cat /proc/cpuinfo: processor : 0 vendor_id : GenuineIntel cpu family : 15 model : 2 model name : Intel(R) Celeron(R) CPU 2.40GHz stepping : 9 cpu MHz : 2392.445 cache size : 128 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 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe up pebs bts sync_rdtsc cid xtpr bogomips : 4788.29 clflush size : 64 $ uname -r: 2.6.24-16-server Is this kernel specific? Does this have to do with my CPU? Do I need to turn acpi off? (because I've already turned acpi off in /boot/grun/menu.lst) Any suggestions would be appreciated. Thanks! Brett Alton [EMAIL PROTECTED] Do you really need to print this email? Help preserve our environment! -- ubuntu-server mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-server More info: https://wiki.ubuntu.com/ServerTeam
