Red Hat Bugzilla – Bug 466621
Power does not switch of after suspend to disk and khubd and ksoftirqd/0 loads CPU after resume
Last modified: 2009-07-14 10:23:07 EDT
Description of problem:
Immediately after installing the system (F9) "Suspend to Disk" worked fine. With the kernel 2.6.25-14.fc9.i686 it still works.
After update kernel up to 188.8.131.52-29.fc9.i686 "Suspend to Disk" mode was broken: all data are recorded on the disc, but the power does not switche off.
When I switch power on the computer resumes correctly (all data loaded and all user processes work), but a core of the CPU is loaded at 100% and 'top' shows that the processor is loaded by 2 processes: khubd and ksoftirqd/0.
When I shut down the computer in such a situation, the problem with disconnecting the power supply is repeated.
Version-Release number of selected component (if applicable):
184.108.40.206-29 and higher
Steps to Reproduce:
1. Start suspending from gnome-power-manager
2. Switch power off after all disk activities
3. Switch power on
1 of the CPU cores is 100% loaded and CPU's frequency 100% (1.6GHz), 2 processes (khubd and ksoftirqd/0) are in the top of process list of utility 'top' (using ordering by CPU loading)
CPU is not overloaded, after resume has finished.
Hardware: Toshiba Satellite L40-17R
[andrey@localhost modules]$ /sbin/lspci
00:00.0 Host bridge: Intel Corporation Mobile PM965/GM965/GL960 Memory Controller Hub (rev 03)
00:02.0 VGA compatible controller: Intel Corporation Mobile GM965/GL960 Integrated Graphics Controller (rev 03)
00:02.1 Display controller: Intel Corporation Mobile GM965/GL960 Integrated Graphics Controller (rev 03)
00:1a.0 USB Controller: Intel Corporation 82801H (ICH8 Family) USB UHCI Controller #4 (rev 03)
00:1a.1 USB Controller: Intel Corporation 82801H (ICH8 Family) USB UHCI Controller #5 (rev 03)
00:1a.7 USB Controller: Intel Corporation 82801H (ICH8 Family) USB2 EHCI Controller #2 (rev 03)
00:1b.0 Audio device: Intel Corporation 82801H (ICH8 Family) HD Audio Controller (rev 03)
00:1c.0 PCI bridge: Intel Corporation 82801H (ICH8 Family) PCI Express Port 1 (rev 03)
00:1c.1 PCI bridge: Intel Corporation 82801H (ICH8 Family) PCI Express Port 2 (rev 03)
00:1c.2 PCI bridge: Intel Corporation 82801H (ICH8 Family) PCI Express Port 3 (rev 03)
00:1d.0 USB Controller: Intel Corporation 82801H (ICH8 Family) USB UHCI Controller #1 (rev 03)
00:1d.1 USB Controller: Intel Corporation 82801H (ICH8 Family) USB UHCI Controller #2 (rev 03)
00:1d.2 USB Controller: Intel Corporation 82801H (ICH8 Family) USB UHCI Controller #3 (rev 03)
00:1d.7 USB Controller: Intel Corporation 82801H (ICH8 Family) USB2 EHCI Controller #1 (rev 03)
00:1e.0 PCI bridge: Intel Corporation 82801 Mobile PCI Bridge (rev f3)
00:1f.0 ISA bridge: Intel Corporation 82801HEM (ICH8M) LPC Interface Controller (rev 03)
00:1f.1 IDE interface: Intel Corporation 82801HBM/HEM (ICH8M/ICH8M-E) IDE Controller (rev 03)
00:1f.2 SATA controller: Intel Corporation 82801HBM/HEM (ICH8M/ICH8M-E) SATA AHCI Controller (rev 03)
05:07.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL-8139/8139C/8139C+ (rev 10)
Please attach your dmesg after a resume to this bug, or paste it in.
Created attachment 320466 [details]
dmesg before and after suspend
There are 2 files in the zip-archive: dmesg-before-suspend.txt and dmesg-after-suspend.txt.
And yet one portion of information. I switched to IceWM (it loads the system less than Gnome) and configure ACPI to hibernate the system using "acpitool -S". It still works, but keybord hanged several times. I cannot assert it exactly (it happened several times only) but I suppose it happened after I started parts of Gnome environment, such as nm-applet or PCManFM. I'll try connect to the laptop if it repeat.
I have tested my suggestion about Gnome programes: the keyboard has been blacked after several minutes after I start 'nm-applet'.
One additional detail about my laptop: it contains an integrated USB Wi-Fi adapter "Realtek Semiconductor Corp. RTL8187B Wireless Adapter" and NetworkManager controls this adapter.
Yet one results of my experiments.
The problem with kernel modules is reproduced under IceWM with PCManFM started but after long period in suspending only. For example when I suspend the laptop for a night. If the laptop is suspended for a short time (2 hours, for example) it resumed normaly. The problem with keybord is not reproduced when PCManFM started.
I think earlier version of the rtl8187b driver can stop hibernation - which one are you using - the vendor one or the new 2.6.26/2.6.27 community one?
I'm using community drive. And since kernel version 220.127.116.11-79 the problem is not reproduced.
Thanks for attantion.
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