Not really big issue, but I remember 3-5 crashes in last month. Mose not working and keyboard not working. Tried alt+ctrl+Fx not working either. Sound and video stops. That most often happens during video playback. Suspected that its flash removed it, but still same happened with html5/mplayer videos. Only way to recover is reboot. I have proprietary nvidia drivers. In other ways quite typical Slackware 14.1 64bit system.
Maybe its hardware issue as some parts are almost decade old.
How I can investigate this some sort of logs or something?

yes, in /var/log/[Xorg.0.log.old syslog.1]

if you ask me, it's probably the nvidia driver

You may want to check the motherboard for swollen capacitors.

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On my system (GeForce 310), the proprietary Nvidia driver will always cause the screen to go black and not respond to any mouse clicks or keystrokes other than a REISUB. I have to use the Nouveau driver, but it never causes a black screen.

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Could be your video card going out.

What version of the Nvidia driver were you using?

The 310 is now a legacy card and I tried a few Nvidia releases in a row (maybe 2 years ago), but each had the black screen issue. I also tried the most current version about 4 months ago and had the same result. I'll be replacing the PC relatively soon (it's 6 years old) so hopefully I won't have any issues using the proprietary driver on the next one.

Thanks, I will try to uninstall nvidia drivers and check those log files after next crash.

i can confirm this on my 32 bit current machine, using an intel hd 2000 graphics card using the stock intel driver. html5 and xine is fine, mplayer will put the system to a halt. it started around kernel 4.4.7, now i use 4.4.8, still got this problem. i am using the big kernel, btw. can't find anything in the log files.

Can be the video card. But since you said parts of your hardware are quite old, it might be the electronics. Once I had the PCIe bus of an old motherboard shortcircuited. It was working but a few times in a week, it would stop working and make the whole computer go numb.

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Being always on Current Slack 32 bit I got the same halt yesterday when playing something via VLC.
It never happened before, so I think it maybe related to the latest kernel upgrades.
My machine is a X220 Lenovo with Intel video card inside.

update: i booted my slackware-64 current system, no problems here with mplayer. so in my case 32-bit slackware is affected only.

I'm posting this off a Thinkpad X220 type 4290-CZ2 (UK keyboard) with Intel graphics and 8Gb ram with a noname SSD. It is 64bit current updated via slackpkg after April 27th and I have Alien Bob's VLC package installed. I'm using the MATE 1.14 packages but I can log in to an xfce or put KDE back on if needed.

What format was the video you were watching in? I have not seen anything strange as yet.

I had random crashes a few years ago. It turned out I had a bad DDR RAM socket, detected via Memtest86, confirmed with Memtest86+. So now I get by with 2G instead of 4G. (Try *that* with Windows! LOL)

I can only reproduce such action while playing an intense game while listening to YouTube video in a browser with 20+ tabs open. I have yet to determine the cause but I'm not highly motivated since it is rare that I leave that many tabs open especially while gaming.

More importantly I do have a solution NOT involving reboot. A simple Alt-Tab restores YouTube function first, and less than one second later my game is active again. That could mean browser fault, YouTube mess, whatever. I truly do not believe nVidia proprietary driver is at fault since

1) I have never, in more than 15 years of using nothing but nVidia's driver, had a serious problem as long as the correct one was installed (however I don't use legacy graphic systems on my Main Box)

2) It is always the loss of sound in the minimized YouTube browser that precedes mouse inactivity and subsequent lockup... fixed by Alt-Tab.

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