Bug 14593
Summary: | Second CPU core not enabled on Turion64x2 TL-52 | ||
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Product: | Platform Specific/Hardware | Reporter: | Dietrich T. Schmitz (dietrich) |
Component: | x86-64 | Assignee: | platform_x86_64 (platform_x86_64) |
Status: | CLOSED OBSOLETE | ||
Severity: | high | CC: | akpm, alan, hj.12876 |
Priority: | P1 | ||
Hardware: | All | ||
OS: | Linux | ||
Kernel Version: | 2.6.31-14 Ubuntu | Subsystem: | |
Regression: | No | Bisected commit-id: | |
Attachments: | dmesg output for second cpu not brought up |
Description
Dietrich T. Schmitz
2009-11-13 13:52:28 UTC
I have the same problem on an Acer Aspire with an AMD Turion (MK-36) only one core is recognized but that's about it, no boot issues that I'm aware of. System is Ubuntu 9.10 64 bit. dmesg | grep CPU: [ 0.000000] SMP: Allowing 1 CPUs, 0 hotplug CPUs [ 0.000000] NR_CPUS:64 nr_cpumask_bits:64 nr_cpu_ids:1 nr_node_ids:1 [ 0.000000] PERCPU: Embedded 30 pages at ffff8800019ee000, static data 90720 bytes [ 0.000000] Initializing CPU#0 [ 0.000000] SLUB: Genslabs=14, HWalign=64, Order=0-3, MinObjects=0, CPUs=1, Nodes=1 [ 0.011333] CPU: L1 I Cache: 64K (64 bytes/line), D cache 64K (64 bytes/line) [ 0.011335] CPU: L2 Cache: 512K (64 bytes/line) [ 0.011339] CPU 0/0x0 -> Node 0 [ 0.011345] mce: CPU supports 5 MCE banks [ 0.141744] CPU0: AMD Turion(tm) 64 Mobile Technology MK-36 stepping 02 [ 0.150000] Brought up 1 CPUs [ 0.150000] CPU0 attaching NULL sched-domain. [ 0.515425] Switched to high resolution mode on CPU 0 [ 0.515457] ACPI: CPU0 (power states: C1[C1] C2[C2] C3[C3]) [ 0.515482] processor LNXCPU:00: registered as cooling_device0 cat /proc/cpuinfo: processor : 0 vendor_id : AuthenticAMD cpu family : 15 model : 76 model name : AMD Turion(tm) 64 Mobile Technology MK-36 stepping : 2 cpu MHz : 800.000 cache size : 512 KB fpu : yes fpu_exception : yes cpuid level : 1 wp : yes flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 syscall nx mmxext fxsr_opt rdtscp lm 3dnowext 3dnow up rep_good extd_apicid pni cx16 lahf_lm svm extapic cr8_legacy bogomips : 1596.21 TLB size : 1024 4K pages clflush size : 64 cache_alignment : 64 address sizes : 40 bits physical, 48 bits virtual power management: ts fid vid ttp tm stc You say it's a regression, but from which kernel version? Which kernel version worked OK? Thanks. Perhaps that flag should be turned off until you have made your own determination. I drew a parallel to the user's experience with bug#14525, but did not personally try an older version of the kernel. The issue, as reported, stands. Please let me know what I can do to be of further assistance in troubleshooting. I have toggled 'Regression' off. |