Public bug reported:
After suspend-to-ram kernel 2.6.22-14-generic doesn't start the system timer.
The waking procedure takes some key pressing and/or mouse movements to proceed.
Previous version 2.6.20-16-generic [from ubuntu 7.04] worked perfectly
on this hardware.
System configuration: ubuntu 7.10 (upgraded from 7.04)
hardware: thinkpad/lenovo R60e
/proc/cpuinfo
processor : 0
vendor_id : GenuineIntel
cpu family : 6
model : 14
model name : Intel(R) Celeron(R) M CPU 420 @ 1.60GHz
stepping : 8
cpu MHz : 1596.134
cache size : 1024 KB
fdiv_bug : no
hlt_bug : no
f00f_bug : no
coma_bug : no
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 clflush dts acpi mmx fxsr sse sse2 ss tm pbe nx constant_tsc up pni monitor
tm2 xtpr
bogomips : 3195.67
clflush size : 64
==== and here is the proof ====
$ while true; do date; grep timer /proc/interrupts ; sleep 1; done
So, 5 sty 2008, 14:32:26 CET
0: 4488609 IO-APIC-edge timer
So, 5 sty 2008, 14:32:27 CET
0: 4488609 IO-APIC-edge timer
So, 5 sty 2008, 14:32:28 CET
0: 4488609 IO-APIC-edge timer
So, 5 sty 2008, 14:32:29 CET
0: 4488609 IO-APIC-edge timer
So, 5 sty 2008, 14:32:30 CET
0: 4488609 IO-APIC-edge timer
So, 5 sty 2008, 14:32:31 CET
0: 4488609 IO-APIC-edge timer
So, 5 sty 2008, 14:32:32 CET
0: 4488609 IO-APIC-edge timer
So, 5 sty 2008, 14:32:33 CET
0: 4488609 IO-APIC-edge timer
So, 5 sty 2008, 14:32:34 CET
0: 4488609 IO-APIC-edge timer
So, 5 sty 2008, 14:32:36 CET
0: 4488609 IO-APIC-edge timer
So, 5 sty 2008, 14:32:40 CET
0: 4488609 IO-APIC-edge timer
So, 5 sty 2008, 14:32:45 CET
0: 4488609 IO-APIC-edge timer
So, 5 sty 2008, 14:32:47 CET
0: 4488609 IO-APIC-edge timer
So, 5 sty 2008, 14:32:52 CET
0: 4488609 IO-APIC-edge timer
So, 5 sty 2008, 14:32:56 CET
0: 4488609 IO-APIC-edge timer
So, 5 sty 2008, 14:33:03 CET
0: 4488609 IO-APIC-edge timer
So, 5 sty 2008, 14:33:07 CET
0: 4488609 IO-APIC-edge timer
So, 5 sty 2008, 14:33:09 CET
0: 4488609 IO-APIC-edge timer
So, 5 sty 2008, 14:33:10 CET
=========
Expected result: interrupt count from system timer increases at least by 100
and time increases by 1 second.
Effect occurs: always after suspend-to-ram
Curiously, if a suspend-to-disk is made after that, the system reverts to
normal functioning.
** Affects: linux-meta (Ubuntu)
Importance: Undecided
Status: New
--
kernel 2.6.22-14-generic doesn't restart timer after suspend-to-ram
https://bugs.launchpad.net/bugs/180564
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