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creaker l33t
Joined: 14 Jul 2012 Posts: 651
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Posted: Tue Jan 01, 2013 6:28 pm Post subject: Unpredictable system hang |
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Hi, Gentoo gang!
Sometimes (once or twice a week) my Gentoo completely freezes. I can't do nothing, keyboard and mouse buttons not responding, no Ctrl+Esc, Alt+Ctrl+Esc, Alt+Ctrl+F1 and so on. All the things I can do is just moving mouse pointer over the screen.
Every time this hang occures on Firefox launch. Firefox window not appeared, but system frozen yet. And I have to press hardware reset button.
What this problem related to? I haven't any idea on where this problem coming from.
Any suggestions on where to search for hang reason?
P.S.
Firefox 10.0.10 here.
KDE 4.8.5 |
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eccerr0r Watchman
Joined: 01 Jul 2004 Posts: 9679 Location: almost Mile High in the USA
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Posted: Tue Jan 01, 2013 6:38 pm Post subject: |
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Do you have another OS? Does it crash too?
Do you have a network/Can you ssh into the machine when it hangs?
Are your keyboard LEDs blinking?
Can you crash without X11 started? _________________ Intel Core i7 2700K/Radeon R7 250/24GB DDR3/256GB SSD
What am I supposed watching? |
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creaker l33t
Joined: 14 Jul 2012 Posts: 651
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Posted: Tue Jan 01, 2013 7:39 pm Post subject: |
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Thanks for your reply!
1. I haven't other linux installed at this desktop.
2. I have another desktop (with debian installed) at my home network - I using this machine as samba server. I communicating with server via putty(from Gentoo). Debian has not putty installed but it is not a problem to install it.
3. No keyboard LEDs blinking when system hangs
4. No any kind of crashes or other problems (except a hang that was described above).
Do you think I can realize something by connecting to hanged Gentoo from Debian over ssh? |
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eccerr0r Watchman
Joined: 01 Jul 2004 Posts: 9679 Location: almost Mile High in the USA
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Posted: Tue Jan 01, 2013 8:32 pm Post subject: |
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Whoops, what I really meant is whether or not the machine is even slightly "alive" when it crashes... it would be nice to see if you could login to a shell remotely to see if it has any diagnostic information.
If you can't even login to it - and it doesn't reply to pings, coupled with no LED blinking, it's likely hardware issue. So the machine won't crash if you don't have X11 running and say, you're doing an emerge world? _________________ Intel Core i7 2700K/Radeon R7 250/24GB DDR3/256GB SSD
What am I supposed watching? |
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mv Watchman
Joined: 20 Apr 2005 Posts: 6747
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Posted: Tue Jan 01, 2013 10:02 pm Post subject: |
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I guess you have an nvidia card. Happens regularly here with nouveau; runs reasonably sane with nvidia-drivers. |
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creaker l33t
Joined: 14 Jul 2012 Posts: 651
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Posted: Tue Jan 01, 2013 10:51 pm Post subject: |
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@ eccerr0r:
Gentoo was installed from stage3, I never performing updates, just full re-installation. So no problem with incorrect updates.
I've just connected to Gentoo from Debian over ssh. Just for testing All fine, I'm ready to connect when Gentoo hangs next time, if it would be possible . What commands would be helpful for checking? top, free ... something else?
@ mv:
Yes, I'm using NVidia card, but I never used nouveau, currently I have nvidia 295.75 installed. |
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creaker l33t
Joined: 14 Jul 2012 Posts: 651
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Posted: Tue Jan 01, 2013 11:01 pm Post subject: |
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Oh, I've just remembered some additional info: on Gentoo hang, sound works, amarok still plays sound... |
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eccerr0r Watchman
Joined: 01 Jul 2004 Posts: 9679 Location: almost Mile High in the USA
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Posted: Fri Jan 04, 2013 9:11 am Post subject: |
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Recently my i7 has been crashing on me, X11 completely hangs, but I had Audacious playing music and it still keeps on playing despite video hang. I can ssh in fine too. Dmesg did report issues with the graphics driver (intel onchip).
This is the kind of data that would be helpful, but for me I'm not certain if it's a graphics driver issue or hardware issue yet... _________________ Intel Core i7 2700K/Radeon R7 250/24GB DDR3/256GB SSD
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mv Watchman
Joined: 20 Apr 2005 Posts: 6747
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Posted: Fri Jan 04, 2013 1:12 pm Post subject: |
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This can happen if you have a sudden power drain. Look at your motherboard: Perhaps some electrolytic capacitors have become fat. |
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Ottre Tux's lil' helper
Joined: 23 Dec 2012 Posts: 129
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Posted: Fri Jan 04, 2013 11:16 pm Post subject: |
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creaker wrote: | Oh, I've just remembered some additional info: on Gentoo hang, sound works, amarok still plays sound... |
If it's just a system freeze, you can recover your keyboard by pressing Alt + SysReq + R.
If that doesn't work, you can kill every process (except the init daemon) and go back to the login screen by pressing Alt + SysReq + E.
If neither key combination works, then it's not a freeze and you have a more serious problem to deal with.
See http://en.wikipedia.org/wiki/Magic_SysRq_key |
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mv Watchman
Joined: 20 Apr 2005 Posts: 6747
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Posted: Sat Jan 05, 2013 8:42 am Post subject: |
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Ottre wrote: | If it's just a system freeze, you can recover your keyboard by pressing Alt + SysReq + R.
If that doesn't work, you can kill every process (except the init daemon) and go back to the login screen by pressing Alt + SysReq + E. |
In my experience, these never worked with nvidia-drivers or nouveau (and with nouveau the state where this should be needed is reached every few minutes). |
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