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
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https://bugs.launchpad.net/bugs/1229288
Title:
13.04 unity displays heashed output
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