Screen & system freezing problems / fresh install?

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Screen & system freezing problems / fresh install?

Postby dx486 » 2017-12-16 12:19

I have been happily using debian 9 stable on my notebook following "don't break debian" advices but I have some issues recently. It freezes from time to time especially when playing mkv files. This is a hard freeze, no keys work, I have to hard reset my computer. Secondly, screen sometimes (randomly) moves horizontally very fast, but it is hard to describe / explain this problem. It seems to happen randomly. --- Edit: I noticed that this screen "flashing" problem happens when I press a key when there is a video on the screen, in browser or in video player.

This is a notebook with Intel graphics. No external GPU.

Question 1: Could you please help me diagnose & solve such problems?

Question 2: I might consider making a fresh start with installing/resetting debian 9.3 to its original state, keeping my current files & settings in my home. What is the practical way to do that, considering that this is a dual-boot system with Win 10, with separate /home partition and encrypted root, home and swap partitions?
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Re: Screen & system freezing problems / fresh install?

Postby None1975 » 2017-12-16 13:36

Hello. Please, post your hardware spec. Maybe you are affected by this bug.
OS: Debian 9.5 / WM: Xmonad
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Re: Screen & system freezing problems / fresh install?

Postby debiman » 2017-12-17 10:00

output of
Code: Select all
lspci -k | grep -iEA5 'vga|3d|display'
uname -rv

please.
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Re: Screen & system freezing problems / fresh install?

Postby Wheelerof4te » 2017-12-17 10:32

None1975 is right, it sounds like that bug. I was affected by it too, see this thread for possible workarounds:
viewtopic.php?f=5&t=135567
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Re: Screen & system freezing problems / fresh install?

Postby dx486 » 2017-12-17 19:31

Code: Select all
$ lspci -k | grep -iEA5 'vga|3d|display'
00:02.0 VGA compatible controller: Intel Corporation HD Graphics 5500 (rev 09)
   Subsystem: Toshiba America Info Systems HD Graphics 5500
   Kernel driver in use: i915
   Kernel modules: i915
00:03.0 Audio device: Intel Corporation Broadwell-U Audio Controller (rev 09)
   Subsystem: Toshiba America Info Systems Broadwell-U Audio Controller


Code: Select all
$ uname -rv
4.9.0-4-amd64 #1 SMP Debian 4.9.65-3 (2017-12-03)


After reading your helpful replies, I have selected an older kernel from GRUB menu. I made a few tests and now the problem seems gone. Current output of "uname -rv" is :

Code: Select all
$ uname -rv
4.9.0-3-amd64 #1 SMP Debian 4.9.30-2+deb9u5 (2017-09-19)
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Re: Screen & system freezing problems / fresh install?

Postby Bulkley » 2018-01-11 23:42

Screen & system freezing is often an hardware problem. It is typically triggered by intensive video use. Check for over heating, etc.

The posts above about a known bug are worth following up.
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Re: Screen & system freezing problems / fresh install?

Postby stevepusser » 2018-01-12 01:39

But using that older kernel will expose you to known security holes, including Meltdown.
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