after the last (2016-05-29) ubuntu packages update, i unable to start Ubuntu 16.04 with any of the installed kernels:
4.5.0-040500-generic ( from http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.5-wily/ ) 4.4.0-22-generic 4.4.0-21-generic I can confirm that this problem also occurs with x86_64 Until the moment, I find two things: I can only start the ubuntu 16.04 if: 1 - Disable Multi Core support on BIOS or 2 - add "acpi=off" on grub start line on system start I think it's a problem with the processor (bug) or a bug with the identify/access the ACPI features I really want to find a definitive solution to this problem. If you need more information or need me to run a program, script, or compile the kernel to test (the last time I did it was in Ubuntu 8.04). please tell me what needs to be run and how, I'll be happy to help. I've attached the kernel log que contains the problem traceback this is lscpu from the system started after disable Multi Core support on BIOS: fabio@luuzfcb:~$ lscpu Architecture: x86_64 CPU op-mode(s): 32-bit, 64-bit Byte Order: Little Endian CPU(s): 2 On-line CPU(s) list: 0,1 Thread(s) per core: 2 Core(s) per socket: 1 Socket(s): 1 NUMA node(s): 1 Vendor ID: GenuineIntel CPU family: 6 Model: 61 Model name: Intel(R) Core(TM) i7-5500U CPU @ 2.40GHz Stepping: 4 CPU MHz: 799.968 CPU max MHz: 3000.0000 CPU min MHz: 500.0000 BogoMIPS: 4788.86 Virtualization: VT-x L1d cache: 32K L1i cache: 32K L2 cache: 256K L3 cache: 4096K NUMA node0 CPU(s): 0,1 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 pdpe1gb rdtscp lm constant_tsc arch_perfmon pebs bts rep_good nopl xtopology nonstop_tsc aperfmperf eagerfpu pni pclmulqdq dtes64 monitor ds_cpl vmx est tm2 ssse3 sdbg fma cx16 xtpr pdcm pcid sse4_1 sse4_2 x2apic movbe popcnt tsc_deadline_timer aes xsave avx f16c rdrand lahf_lm abm 3dnowprefetch epb intel_pt tpr_shadow vnmi flexpriority ept vpid fsgsbase tsc_adjust bmi1 avx2 smep bmi2 erms invpcid rdseed adx smap xsaveopt dtherm ida arat pln pts ** Attachment added: "kern.log.1" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1483343/+attachment/4673939/+files/kern.log.1 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1483343 Title: NMI watchdog: BUG: soft lockup errors when we execute lock_torture_wr tests To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1483343/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
