Bug 404907 – sys-kernel/gentoo-sources-*: Freeze during resume from suspend and high CPU usage after suspend

• Product: Gentoo Linux
• Status: RESOLVED UPSTREAM

[Description Štěpán Dalecký 2012-02-20 01:47:12 UTC]

I have two problems: 
a) after resume CPU usage is 100%. 
b) during resume it freezes for 30 seconds

Reproducible: Always

Steps to Reproduce:
1) Suspend(from Xfce or pm-suspend) - OK 
2) Ntb is shutdown - OK 
3) Press a key and ntb start to resume - OK 
4) 30 second freeze - PROBLEM 
5) Continue resume normally - OK 
6) Resume is successfully done and desktop is normally usuable - OK 
Actual Results:  
CPU usage is 100%.

How freeze looks? 
Black screen with gray cursor blinking in the upper left corner. 

Expected Results:  
No CPU usage and resume in 1 or 2 seconds.

First problem I solved using https://bbs.archlinux.org/viewtopic.php?pid=936789 by removing sr_mod(SCSI support for CD-ROM). 
So now i have no CD-ROM support but no CPU usage problem.
But it is not ideal solution.

Second problem... i can't solve it at all.

[Comment 1 Štěpán Dalecký 2012-02-20 01:54:00 UTC]

Created attachment 302549 [details]
lspci

[Comment 2 Štěpán Dalecký 2012-02-20 01:56:17 UTC]

Created attachment 302551 [details]
dmesg

[Comment 3 Štěpán Dalecký 2012-02-20 01:56:58 UTC]

Created attachment 302553 [details]
.config

[Comment 4 Štěpán Dalecký 2012-02-20 02:05:33 UTC]

I have ASUS F5VL notebook and now using 3.2.6 kernel. I have this problem a couple of days - from buy my notebook(2.6.32 kernel I think) till today(3.2.6 kernel).

In dmesg we can see some ata, ACPI error and lost interrupt error. I've googled a lot but I couldn't find anything related exactly to my problem.

I try to fix it here: http://forums.gentoo.org/viewtopic-t-881477-start-0.html
and first problem I fix by removing  module like here: https://bbs.archlinux.org/viewtopic.php?pid=936789

I have SiS chipset SiS 671/SiS 968 and on some notebooks it supports AHCI mode instead of IDE... so it could be supported by AHCI driver instead of sata_sis. I tried to find how to switch it from IDE to AHCI mode but no luck - it should be possible due to PCI registers(setpci utility) but there is no public documentation for this chipset. In BIOS I don't have this option.

Feel free to ask if you want any type of information. Thank you for your help.

[Comment 5 Štěpán Dalecký 2012-02-23 23:08:17 UTC]

Modifying /usr/src/linux/drivers/ata/sata_sis.c
fix resume problem. So it is needed to add .suspend and .resume function. In mainstream there should be some "if" for CONFIG_PM. But this works for me.

static struct pci_driver sis_pci_driver = {
         .name                   = DRV_NAME,
         .id_table               = sis_pci_tbl,
         .probe                  = sis_init_one,
         .remove                 = ata_pci_remove_one,
         .suspend                = ata_pci_device_suspend,
         .resume                 = ata_pci_device_resume,
 };

[Comment 6 Mike Pagano 2012-09-09 18:19:34 UTC]

Closing, will watch upstream bug if any developments happen.