|Summary:||second suspend fails and system freezes in hp 6910P laptop|
|Product:||Power Management||Reporter:||Jithin Emmanuel (jithin1987)|
|Severity:||high||CC:||acpi-bugzilla, akpm, lenb, rjmx, rjw|
|Bug Depends on:|
|Bug Blocks:||7216, 14230|
Description Jithin Emmanuel 2010-01-31 15:53:10 UTC
Hi, Suspend to ram works for first time. Second time when I try system freezes. I am not seeing any errors on kernel logs. I use intel 965GM graphics. And this issue is reproducible all times.
Comment 1 Andrew Morton 2010-02-01 21:15:56 UTC
You say it's a regression. From which kernel version? Was 2.6.32 OK? Thanks.
Comment 2 Jithin Emmanuel 2010-02-02 01:17:17 UTC
Yes 2.6.32 was fine. I installed 2.6.32-7 and yesterday. I also installed acpid. After that I was able to suspend/resume multiple times. Just when I thought it was working again it froze again. But now it appears to be random. I dont know if acpid is needed at all, I use kde and power related thing was correctly managed by its power manage power devil. I am npot getting anything in the logs either. I tried to ssh to my host during it froze, but it seems that it froze after network was deactivated.
Comment 3 Len Brown 2010-02-02 03:00:46 UTC
What is the latest kernel where this never happens, 2.6.32? What is the earliest kernel where this issues is seen -- 220.127.116.11? Is it possible to bisect and find the commit that caused the regression?
Comment 4 Jithin Emmanuel 2010-02-02 04:02:53 UTC
The earliest I think is 18.104.22.168. Latest I am not sure its 2.6.32 latest working one. It should be 2.6.31 I am having a lot of freezes with 2.6.32 kernel. Suspend is one of them it also happens during shutdown/restart. I ignored them for a while, and I guess I am little bit later in reporting the issue. . Then I saw in arch forums lots of others also having same system freeze under different scenario. So I decided to report the issue here.
Comment 5 Rafael J. Wysocki 2010-02-02 20:09:02 UTC
(In reply to comment #4) > The earliest I think is 22.214.171.124. Latest I am not sure its 2.6.32 latest > working one. It should be 2.6.31 Adding to the list of regressions from 2.6.31. Could you please test 2.6.33-rc6?
Comment 6 Ron Murray 2010-02-02 21:17:51 UTC
I have the same problem (Sony VGN-CR507E laptop, Debian/squeeze, GM965 graphics). I first noticed the problem around 126.96.36.199, but since 2.6.32 also brought problems with resuming with the iwlagn wireless driver, I hadn't tried to suspend/resume twice. Suspend/resume the first time works fine, suspending the second time fails with a blank screen, underline cursor in the top left corner. Haven't found a key sequence that does anything, and the only recourse is to power down and restart. last entries in pm-suspend.log: /usr/lib/pm-utils/sleep.d/00powersave suspend suspend: success. /usr/lib/pm-utils/sleep.d/49bluetooth suspend suspend: not applicable. /usr/lib/pm-utils/sleep.d/55NetworkManager suspend suspend: not applicable. /usr/lib/pm-utils/sleep.d/75modules suspend suspend: not applicable. /usr/lib/pm-utils/sleep.d/90clock suspend suspend: not applicable. /usr/lib/pm-utils/sleep.d/94cpufreq suspend suspend: success. /usr/lib/pm-utils/sleep.d/95anacron suspend suspend: success. /usr/lib/pm-utils/sleep.d/95led suspend suspend: not applicable. /usr/lib/pm-utils/sleep.d/98smart-kernel-video suspend suspend: success. /etc/pm/sleep.d/99laptop-mode suspend suspend: success. /usr/lib/pm-utils/sleep.d/99video suspend suspend: disabled. /etc/pm/sleep.d/action_wpa suspend suspend: success. Wed Jan 20 22:00:23 EST 2010: performing suspend .
Comment 7 Jithin Emmanuel 2010-02-03 01:57:15 UTC
I dont know if these are related my system froze during VT switch. Like the nature of this bug I was able to do VT switch multiple times without any issues and it just froze. Dont know how many time I successfully did the switch. And there was nothing in the logs. I will upgrade to 2.6.33-rc6 now and check.
Comment 8 Jithin Emmanuel 2010-02-03 09:40:06 UTC
I installed 2.6.33-rc6. So far things are good. Did 5 suspend/resume in a row and is working. Also I removed acpid. Lately there so many random freezes I am facing. So I will monitor for a couple for days and report back.
Comment 9 Jithin Emmanuel 2010-02-03 17:48:29 UTC
I got a freeze when rebooting. I downgraded to 188.8.131.52 kernel and everything seems to be working fine.
Comment 10 Ron Murray 2010-03-02 02:36:39 UTC
Problem still in evidence with kernel version 2.6.33.
Comment 11 Ron Murray 2010-03-19 01:32:52 UTC
Today I grabbed the testing 2.6.32 kernels and compiled them all. Tried 2.6.32-rc1 first and had it fail on the second suspend/resume cycle, just like the production 2.6.32 kernels. Looks like the problem is somewhere in the 5.8M of changelog associated with 2.6.32-rc1. I suspect that the problem is in the graphics system, because that's where it seems to be hanging. The effect I get has changed somewhat: originally I had a blank screen with an underline cursor, but now I get half an X screen (looks like it died halfway though the screensaver painting the screen). Some things have changed in userspace on the laptop, including a new grub that makes more use of weird framebuffer devices. Any ideas on where to look next?
Comment 12 Rafael J. Wysocki 2011-01-16 22:56:06 UTC
Is the problem still present in 2.6.37?
Comment 13 Ron Murray 2011-01-16 23:45:20 UTC
It was fixed somewhere around 2.6.34, I think. Sorry, I thought I'd sent an update, but apparently not.