Comment 26 for bug 1229288

Thanks for this additional input.

Rather than reload the mobo bios, I rebuilt my machine (about three weeks ago) using a new mobo, cpu, etc, etc: after all the old one was old(ish). So I cannot comment on whether a bios upgrade would have cured the problem, sorry.

For what it's worth the new config seems fine and here is stuff from current sysinfo:

SYSTEM INFORMATION
 Running Ubuntu Linux, the Ubuntu 13.04 (raring) release.
 GNOME: 3.6.3 (Ubuntu 2013-03-18)
 Kernel version: 3.8.0-32-generic (#47-Ubuntu SMP Tue Oct 1 22:35:23 UTC 2013)
 GCC: 4.7 (x86_64-linux-gnu)
 Xorg: 1.13.3 (16 October 2013 04:35:36PM) (16 October 2013 04:35:36PM)
 Uptime: 4 days 3 h 58 min
CPU INFORMATION
 GenuineIntel, Intel(R) Core(TM) i5-4430 CPU @ 3.00GHz
 Number of CPUs: 4
 CPU clock currently at 800.000 MHz with 6144 KB cache
 Numbering: family(6) model(60) stepping(3)
 Bogomips: 5985.82
 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 fma cx16 xtpr pdcm pcid sse4_1 sse4_2 x2apic movbe popcnt tsc_deadline_timer aes xsave avx f16c rdrand lahf_lm abm ida arat xsaveopt pln pts dtherm tpr_shadow vnmi flexpriority ept vpid fsgsbase tsc_adjust bmi1 avx2 smep bmi2 erms invpcid
MEMORY INFORMATION
 Total memory: 7873 MB
 Total swap: 30576 MB
HARDWARE INFORMATION
MOTHERBOARD
 Host bridge
  Intel Corporation Haswell DRAM Controller (rev 06)
  Subsystem: Gigabyte Technology Co., Ltd Device 5000
 PCI bridge(s)
  Intel Corporation Lynx Point PCI Express Root Port #1 (rev d5) (prog-if 00 [Normal decode])
  Intel Corporation Lynx Point PCI Express Root Port #3 (rev d5) (prog-if 00 [Normal decode])
  Intel Corporation 82801 PCI Bridge (rev d5) (prog-if 01 [Subtractive decode])
  Intel Corporation 82801 PCI Bridge (rev 41) (prog-if 01 [Subtractive decode])
  Intel Corporation Lynx Point PCI Express Root Port #1 (rev d5) (prog-if 00 [Normal decode])
  Intel Corporation Lynx Point PCI Express Root Port #3 (rev d5) (prog-if 00 [Normal decode])
  Intel Corporation 82801 PCI Bridge (rev d5) (prog-if 01 [Subtractive decode])
  Intel Corporation 82801 PCI Bridge (rev 41) (prog-if 01 [Subtractive decode])
 ISA bridge
  Intel Corporation Lynx Point LPC Controller (rev 05)
  Subsystem: Gigabyte Technology Co., Ltd Device 5001
GRAPHIC CARD
 VGA controller
  Intel Corporation Haswell Integrated Graphics Controller (rev 06) (prog-if 00 [VGA controller])
  Subsystem: Gigabyte Technology Co., Ltd Device d000
SOUND CARD
 Multimedia controller
  Intel Corporation Lynx Point High Definition Audio Controller (rev 05)
  Subsystem: Gigabyte Technology Co., Ltd Device a002
NETWORK
 Ethernet controller
  Realtek Semiconductor Co., Ltd. RTL8111/8168 PCI Express Gigabit Ethernet controller (rev 06)
  Subsystem: Gigabyte Technology Co., Ltd Motherboard