Debugging complete system freezes

yuvadm · 2014-12-04 21:15:43

A newly installed Arch system (on a Lenovo IdeaPad Flex 10) is suffering from periodical freezes. When this happens, the active X screen freezes, mouse and keyboard do not respond, it's impossible to change to another vt, the device does not answer pings on the network, and SSH does not answer either.

Upon rebooting nothing shows up in the journalctl from the affected time frame.

How should I go about debugging this problem? Is there any higher logging or debugging level I can configure to pinpoint what going on with these freezes?

EDIT: These are not device heating issues, the system temperature seemed to be normal with no significant heating going on.

Last edited by yuvadm (2014-12-04 21:19:57)

lucke · 2014-12-04 22:01:52

Look at https://bbs.archlinux.org/viewtopic.php?id=190247 and https://bbs.archlinux.org/viewtopic.php?id=190669.

See if Magic SysRq works. https://wiki.archlinux.org/index.php/Ke … uts#Kernel

Trilby · 2014-12-04 22:18:41

Are you sure the screen freezes, and not just the input? Has it froze when there was something dynamic (say htop, or even a video) visible?

I don't know if this is recommended anywhere, but just brainstorming I'd probably just run "dmesg -w > somelogfile" and leave it running. Then after the freeze see what was last written to somelogfile.

ighea · 2015-02-11 21:51:43

yuvadm wrote:

A newly installed Arch system (on a Lenovo IdeaPad Flex 10) is suffering from periodical freezes. When this happens, the active X screen freezes, mouse and keyboard do not respond, it's impossible to change to another vt, the device does not answer pings on the network, and SSH does not answer either.
Upon rebooting nothing shows up in the journalctl from the affected time frame.
How should I go about debugging this problem? Is there any higher logging or debugging level I can configure to pinpoint what going on with these freezes?

Well, at least you found the wiki article. Are you using UXA instead of SNA for the Intel GPU driver? If not that would be the first thing to try.

I also bought the same device in question a few days ago and I am wondering if your touch screen is working perfectly and not stopping to respond to input after a few minutes?

yuvadm · 2015-02-11 23:25:32

ighea wrote:

I also bought the same device in question a few days ago and I am wondering if your touch screen is working perfectly and not stopping to respond to input after a few minutes?

Unfortunately, I don't have the device anymore. However, I definitely recall touch screen issues that included no response after a while.

Arch Linux

#1 2014-12-04 21:15:43

Debugging complete system freezes

#2 2014-12-04 22:01:52

Re: Debugging complete system freezes

#3 2014-12-04 22:18:41

Re: Debugging complete system freezes

#4 2015-02-11 21:51:43

Re: Debugging complete system freezes

#5 2015-02-11 23:25:32

Re: Debugging complete system freezes

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