[Bug 501368] New: Sometimes (very rarely) one of my processors disappears after suspend/resume
http://bugzilla.novell.com/show_bug.cgi?id=501368 Summary: Sometimes (very rarely) one of my processors disappears after suspend/resume Classification: openSUSE Product: openSUSE 11.1 Version: Final Platform: x86-64 OS/Version: openSUSE 11.1 Status: NEW Severity: Normal Priority: P5 - None Component: Kernel AssignedTo: bnc-team-screening@forge.provo.novell.com ReportedBy: nice@titanic.nyme.hu QAContact: qa@suse.de Found By: --- User-Agent: Mozilla/5.0 (X11; U; Linux x86_64; hu-HU; rv:1.9.0.9) Gecko/2009041500 SUSE/3.0.9-0.1.1 Firefox/3.0.9 I have a (dual core) Intel centrino CPU in my Compaq nc6320 notebook. Very rarely after suspension one of the processors disappear from /proc/cpuinfo. Does the kernel switch to uniprocessor mode? The system works perfectly afterwards, but I have to restart the machine to regain the lost processor. Here's a /proc/cpuinfo after a CPU loss: processor : 0 vendor_id : GenuineIntel cpu family : 6 model : 15 model name : Intel(R) Core(TM)2 CPU T7200 @ 2.00GHz stepping : 6 cpu MHz : 1000.000 cache size : 4096 KB physical id : 0 siblings : 1 core id : 0 cpu cores : 1 apicid : 0 initial apicid : 0 fpu : yes fpu_exception : yes cpuid level : 10 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 syscall nx lm constant_tsc arch_perfmon pebs bts rep_good nopl pni monitor ds_cpl vmx est tm2 ssse3 cx16 xtpr lahf_lm bogomips : 3989.98 clflush size : 64 cache_alignment : 64 address sizes : 36 bits physical, 48 bits virtual power management: Reproducible: Sometimes Steps to Reproduce: 1. Suspend 2. Resume Actual Results: I see only one processor on the SMP system Expected Results: All processors should be visible -- Configure bugmail: http://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.
http://bugzilla.novell.com/show_bug.cgi?id=501368 User nice@titanic.nyme.hu added comment http://bugzilla.novell.com/show_bug.cgi?id=501368#c1 --- Comment #1 from Tamás Németh <nice@titanic.nyme.hu> 2009-05-06 08:11:57 MDT --- Created an attachment (id=290426) --> (http://bugzilla.novell.com/attachment.cgi?id=290426) dmesg -- Configure bugmail: http://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.
http://bugzilla.novell.com/show_bug.cgi?id=501368 User nice@titanic.nyme.hu added comment http://bugzilla.novell.com/show_bug.cgi?id=501368#c2 --- Comment #2 from Tamás Németh <nice@titanic.nyme.hu> 2009-05-06 08:12:33 MDT --- Created an attachment (id=290427) --> (http://bugzilla.novell.com/attachment.cgi?id=290427) /var/log/messages -- Configure bugmail: http://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.
http://bugzilla.novell.com/show_bug.cgi?id=501368 User nice@titanic.nyme.hu added comment http://bugzilla.novell.com/show_bug.cgi?id=501368#c3 --- Comment #3 from Tamás Németh <nice@titanic.nyme.hu> 2009-05-06 08:31:06 MDT --- milleniumfalcon:~ # hwinfo --cpu 01: None 00.0: 10103 CPU [Created at cpu.301] Unique ID: rdCR.j8NaKXDZtZ6 Hardware Class: cpu Arch: X86-64 Vendor: "GenuineIntel" Model: 6.15.6 "Intel(R) Core(TM)2 CPU T7200 @ 2.00GHz" Features: 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,syscall,nx,lm,constant_tsc,arch_perfmon,pebs,bts,rep_good,nopl,pni,monitor,ds_cpl,vmx,est,tm2,ssse3,cx16,xtpr,lahf_lm Clock: 2000 MHz BogoMips: 3989.94 Cache: 4096 kb Units/Processor: 2 Config Status: cfg=no, avail=yes, need=no, active=unknown 02: None 01.0: 10103 CPU [Created at cpu.301] Unique ID: wkFv.j8NaKXDZtZ6 Hardware Class: cpu Arch: X86-64 Vendor: "GenuineIntel" Model: 6.15.6 "Intel(R) Core(TM)2 CPU T7200 @ 2.00GHz" Features: 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,syscall,nx,lm,constant_tsc,arch_perfmon,pebs,bts,rep_good,nopl,pni,monitor,ds_cpl,vmx,est,tm2,ssse3,cx16,xtpr,lahf_lm Clock: 2000 MHz BogoMips: 3990.04 Cache: 4096 kb Units/Processor: 2 Config Status: cfg=no, avail=yes, need=no, active=unknown -- Configure bugmail: http://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.
http://bugzilla.novell.com/show_bug.cgi?id=501368 Leon Wang <llwang@novell.com> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |llwang@novell.com AssignedTo|bnc-team-screening@forge.pr |kernel-maintainers@forge.pr |ovo.novell.com |ovo.novell.com -- Configure bugmail: http://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.
http://bugzilla.novell.com/show_bug.cgi?id=501368 Jeff Mahoney <jeffm@novell.com> changed: What |Removed |Added ---------------------------------------------------------------------------- Priority|P5 - None |P3 - Medium AssignedTo|kernel-maintainers@forge.pr |rjw@novell.com |ovo.novell.com | -- Configure bugmail: http://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.
http://bugzilla.novell.com/show_bug.cgi?id=501368 User nice@titanic.nyme.hu added comment http://bugzilla.novell.com/show_bug.cgi?id=501368#c4 --- Comment #4 from Tamás Németh <nice@titanic.nyme.hu> 2009-05-19 01:41:05 MDT --- Sorry, I was wrong when I sad that it happens only very rarely. Actually it happens often when I suspend to disk instead of RAM. Maybe always? However, I use s2disk very rarely, much more often s2ram (several times a day). -- Configure bugmail: http://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.
http://bugzilla.novell.com/show_bug.cgi?id=501368 User rjw@novell.com added comment http://bugzilla.novell.com/show_bug.cgi?id=501368#c5 --- Comment #5 from Rafael Wysocki <rjw@novell.com> 2009-05-19 14:52:24 MDT --- It looks like the kernel has a problem with turning the second core on during resume from hibernation. I think it would be helpful to verify if this is 100% reproducible with s2disk. -- Configure bugmail: http://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.
http://bugzilla.novell.com/show_bug.cgi?id=501368 User nice@titanic.nyme.hu added comment http://bugzilla.novell.com/show_bug.cgi?id=501368#c6 --- Comment #6 from Tamás Németh <nice@titanic.nyme.hu> 2009-05-20 13:31:30 MDT --- (In reply to comment #5)
It looks like the kernel has a problem with turning the second core on during resume from hibernation. I think it would be helpful to verify if this is 100% reproducible with s2disk.
It doesn't always happen. I observed s2ram to be able to regain both cores today. -- Configure bugmail: http://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.
http://bugzilla.novell.com/show_bug.cgi?id=501368 User rjw@novell.com added comment http://bugzilla.novell.com/show_bug.cgi?id=501368#c7 Rafael Wysocki <rjw@novell.com> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|NEW |NEEDINFO Info Provider| |nice@titanic.nyme.hu --- Comment #7 from Rafael Wysocki <rjw@novell.com> 2009-05-28 11:26:47 MDT --- Can you please verify if this problem is reproducible with the kernel from ftp://ftp.suse.com/pub/projects/kernel/kotd/HEAD/ ? -- Configure bugmail: http://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.
http://bugzilla.novell.com/show_bug.cgi?id=501368 User nice@titanic.nyme.hu added comment http://bugzilla.novell.com/show_bug.cgi?id=501368#c8 Tamás Németh <nice@titanic.nyme.hu> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|NEEDINFO |NEW Info Provider|nice@titanic.nyme.hu | --- Comment #8 from Tamás Németh <nice@titanic.nyme.hu> 2009-05-31 15:19:40 MDT --- (In reply to comment #7)
Can you please verify if this problem is reproducible with the kernel from ftp://ftp.suse.com/pub/projects/kernel/kotd/HEAD/ ?
Yes, I've tried that kernel, and despite that hibernation didn't work by KDE powerdevil and not even by the s2ram commandline utility, I was able to do hibernation by echoing 'disk' to /sys/power/state. After returning from the first hibernation I had to recognize that the kernel has lost one of the CPU cores again. So, this kernel does not solve the problem :( -- Configure bugmail: http://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.
http://bugzilla.novell.com/show_bug.cgi?id=501368 User rjw@novell.com added comment http://bugzilla.novell.com/show_bug.cgi?id=501368#c9 Rafael Wysocki <rjw@novell.com> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|NEW |RESOLVED Resolution| |UPSTREAM --- Comment #9 from Rafael Wysocki <rjw@novell.com> 2009-06-01 06:30:23 MDT --- This means it's an upstream problem with your machine. I have created a bug entry for it at http://bugzilla.kernel.org/show_bug.cgi?id=13421 Please create an account for yourself at bugzilla.kernel.org and add it to the CC list of the bug entry above. -- Configure bugmail: http://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.
http://bugzilla.novell.com/show_bug.cgi?id=501368 User nice@titanic.nyme.hu added comment http://bugzilla.novell.com/show_bug.cgi?id=501368#c10 --- Comment #10 from Tamás Németh <nice@titanic.nyme.hu> 2009-10-12 02:42:31 MDT --- (In reply to comment #9)
This means it's an upstream problem with your machine.
I have created a bug entry for it at
http://bugzilla.kernel.org/show_bug.cgi?id=13421
Please create an account for yourself at bugzilla.kernel.org and add it to the CC list of the bug entry above.
Sorry, I've forgotten read your mail, and thus I didn't register to the kernel bugzilla, but all I can say is that this problem is solved in openSUSE 11.2 Milestone 8!!! -- Configure bugmail: http://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.
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