Public bug reported:
Binary package hint: linux-image-2.6.20-15-generic
On my Sager NP-4750 with 2.6.20 kernels modprobing battery, ac and
thermal take a long time, as do any programs which access those. hal,
kpowermanager, gkrellm.
During boot loading acpi modules has a long delay, and starting hal
takes about 64 seconds longer with those modules inserted than w/o them.
Startup w/o acpi modules for batt and ac:
[EMAIL PROTECTED]:~# time /etc/init.d/dbus start
* Starting system message bus dbus [ OK ]
* Starting Hardware abstraction layer hald [ OK ]
* Starting DHCP D-Bus daemon dhcdbd [ OK ]
* Starting network connection manager NetworkManager [ OK ]
* Starting Avahi mDNS/DNS-SD Daemon: avahi-daemon [ OK ]
* Starting network events dispatcher NetworkManagerDispatcher [ OK ]
real 0m6.661s
user 0m0.169s
sys 0m0.097s
[EMAIL PROTECTED]:~# time modprobe ac
real 0m0.518s
user 0m0.012s
sys 0m0.005s
[EMAIL PROTECTED]:~# time modprobe thermal
real 0m4.554s
user 0m0.012s
sys 0m0.008s
[EMAIL PROTECTED]:~# time modprobe battery
real 0m19.026s
user 0m0.013s
sys 0m0.004s
[EMAIL PROTECTED]:~# time /etc/init.d/dbus start
* Starting system message bus dbus [ OK ]
* Starting Hardware abstraction layer hald [ OK ]
* Starting DHCP D-Bus daemon dhcdbd [ OK ]
* Starting network connection manager NetworkManager [ OK ]
* Starting Avahi mDNS/DNS-SD Daemon: avahi-daemon [ OK ]
* Starting network events dispatcher NetworkManagerDispatcher [ OK ]
real 1m10.391s
user 0m0.261s
sys 0m0.149s
And this is what syslog says:
Mar 31 01:17:06 jkd hald[8852]: 01:17:06.499 [I] acpi.c:1225: acpi_add:
acpi_path=/proc/acpi/battery/BAT0 acpi_type=0, parent=0x00000000
Mar 31 01:17:44 jkd hald[8852]: 01:17:44.505 [D] acpi.c:162: Current voltage
is unknown, smaller than 501001765435r greater than design
Mar 31 01:17:44 jkd hald[8852]: 01:17:44.519 [I] acpi.c:1197: Add callouts
completed udi=/org/freedesktop/Hal/devices/acpi_BAT0
Mar 31 01:17:44 jkd hald[8852]: 01:17:44.520 [I] hald.c:106: Added device to
GDL; udi=/org/freedesktop/Hal/devices/acpi_BAT0
Mar 31 01:17:44 jkd hald[8852]: 01:17:44.520 [I] acpi.c:1225: acpi_add:
acpi_path=/proc/acpi/processor/CPU0 acpi_type=1, parent=0x00000000
Mar 31 01:17:44 jkd hald[8852]: 01:17:44.534 [I] acpi.c:1197: Add callouts
completed udi=/org/freedesktop/Hal/devices/acpi_CPU0
Mar 31 01:17:44 jkd hald[8852]: 01:17:44.534 [I] hald.c:106: Added device to
GDL; udi=/org/freedesktop/Hal/devices/acpi_CPU0
Mar 31 01:17:44 jkd hald[8852]: 01:17:44.534 [I] acpi.c:1225: acpi_add:
acpi_path=/proc/acpi/ac_adapter/AC acpi_type=3, parent=0x00000000
Mar 31 01:18:05 jkd hald[8852]: 01:18:05.011 [D] acpi.c:162: Current voltage
is unknown, smaller than 501001765435r greater than design
Mar 31 01:18:05 jkd hald[8852]: 01:18:05.055 [I] acpi.c:1197: Add callouts
completed udi=/org/freedesktop/Hal/devices/acpi_AC
Mar 31 01:18:05 jkd hald[8852]: 01:18:05.055 [I] hald.c:106: Added device to
GDL; udi=/org/freedesktop/Hal/devices/acpi_AC
Mar 31 01:18:05 jkd hald[8852]: 01:18:05.056 [I] acpi.c:1225: acpi_add:
acpi_path=/proc/acpi/button/lid/LID acpi_type=11, parent=0x00000000
Mar 31 01:18:06 jkd hald[8852]: 01:18:06.071 [I] acpi.c:1197: Add callouts
completed udi=/org/freedesktop/Hal/devices/acpi_LID
Mar 31 01:18:06 jkd hald[8852]: 01:18:06.071 [I] hald.c:106: Added device to
GDL; udi=/org/freedesktop/Hal/devices/acpi_LID
Mar 31 01:18:06 jkd hald[8852]: 01:18:06.071 [I] acpi.c:1225: acpi_add:
acpi_path=/proc/acpi/button/power/PWB acpi_type=11, parent=0x00000000
Mar 31 01:18:06 jkd hald[8852]: 01:18:06.086 [I] acpi.c:1197: Add callouts
completed udi=/org/freedesktop/Hal/devices/acpi_PWB
Mar 31 01:18:06 jkd hald[8852]: 01:18:06.086 [I] hald.c:106: Added device to
GDL; udi=/org/freedesktop/Hal/devices/acpi_PWB
Mar 31 01:18:06 jkd hald[8852]: 01:18:06.086 [I] acpi.c:1225: acpi_add:
acpi_path=/proc/acpi/button/power/PWRF acpi_type=11, parent=0x00000000
Mar 31 01:18:06 jkd hald[8852]: 01:18:06.100 [I] acpi.c:1197: Add callouts
completed udi=/org/freedesktop/Hal/devices/acpi_PWRF
Mar 31 01:18:06 jkd hald[8852]: 01:18:06.101 [I] hald.c:106: Added device to
GDL; udi=/org/freedesktop/Hal/devices/acpi_PWRF
Mar 31 01:18:06 jkd hald[8852]: 01:18:06.101 [I] acpi.c:1225: acpi_add:
acpi_path=/proc/acpi/button/sleep/SLPB acpi_type=11, parent=0x00000000
Mar 31 01:18:06 jkd hald[8852]: 01:18:06.116 [I] acpi.c:1197: Add callouts
completed udi=/org/freedesktop/Hal/devices/acpi_SLPB
Mar 31 01:18:06 jkd hald[8852]: 01:18:06.117 [I] hald.c:106: Added device to
GDL; udi=/org/freedesktop/Hal/devices/acpi_SLPB
Mar 31 01:18:06 jkd hald[8852]: 01:18:06.118 [I] osspec.c:737:
hal_util_find_known_parent: '/sys/block/hdc/fakevolume'->'/sys/block/hdc'
You can see that almost exactly one minute has passed from the first acpi to
the last acpi call, as well that it takes about 20 sec just to modprobe battery.
This is a bug in the kernel but I have yet to find any record of it
elsewhere, it's present in any 2.6.20 kernel I've tried, vanillay
2.6.20.4, 2.6.20.5, 2.6.21-rc4 - 2.6.21-rc5 with mm patches. I don't
have any problem using my own 2.6.19.7.
** Affects: linux-source-2.6.20 (Ubuntu)
Importance: Undecided
Status: Unconfirmed
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acpi module delay (hang) for long periods affecting battery ac thermal and hal
delay during boot
https://bugs.launchpad.net/bugs/106399
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