I forgot to mention:
The knoppix version is 7.0.2 (DVD).
The kernel version is 3.3.7.
I had put knoppix into Suspend (Fn+F4) for a few minutes (which I've done many
times before), and then pressed SPACEBAR to resume it. It resumed and displayed
what was on the screen previously.
I didn't type anything but proceeded to read the text that was in a Kate window
that was still open from before the Suspend.
However, about 20 to 40 seconds after the resume-from-Suspend (as I was reading
the Kate text), the laptop appeared to perform a re-login (all by itself). That
is, it seemed to do the same as when you select KMenu/Logout/Logout. The
applications that I had open all disappeared, and a fresh Desktop was displayed
(the system uses LXDE).
The applications that I had open (before the re-login) were three instances of
the Chromium browser, and 2 instances of the Kate editor. I've had no problems
before by having three instances of Chromium open.
At the time the re-login happened, I wasn't doing anything or touching anything,
and the internet WASN'T connected.
I'm not sure if this re-login occurrence has happened before, but it's worrying
because if I'd had something important running at the time, then it would have
been disastrous.
Please could you tell me why the system would do a re-login all by itself, and
how can I stop it happening again. Thanks.
I forgot to mention:
The knoppix version is 7.0.2 (DVD).
The kernel version is 3.3.7.
NEW Palmrest Keyboard For Lenovo Thinkpad E15 Gen 2 20T8 20T9 Black 5M10W64513
$80.99
For Lenovo IdeaPad 3 15IIL05 15IML05 15ADA05 15ARE05 Palmrest Keyboard Touchpad
$59.25
Lenovo H50-55 Tower AMD A10-7800@3.5GHz 12GB RAM Radeon R7 2 Tb wi-fi win 10 H
$109.99
Lenovo 500w Gen 3 Laptop, 11.6" IPS Glass, N6000, 8GB, 128GB SSD, Win 11 Home
$186.99
LENOVO LEGION 5 PRO 16ITH6H | CORE I7-11800H | 2TB | 16GB RAM | WIN11 | NEW
$699.99
Lenovo Ideapad Slim 3 15Iru8 15.6" Touchscreen i5-1335U 16GB 512GB SSD W11H-64
$349.99
Lenovo IP 5 16IAU7 16" 2.5K Chromebook i3-1215U 8GB Ram 128GB eMMC Chrome OS
$219.99
Lenovo Ideapad 1i 15.6" FHD Notebook Intel Core i5-1235U 8GB RAM 256GB SSD
$339.99
Lenovo Flex 7 14IRU8 14" 2.2K Touch Intel Core i7-1355U 16GB 1TB SSD W11H
$529.99
Lenovo K14 AMD Laptop, 14" FHD IPS LED , Ryzen 5 5600U, GB, 256GB SSD
$569.00