FS#57730 - [xscreensaver] Crash unlocks session

Attached to Project: Arch Linux
Opened by Tom Herbert (mashdot) - Tuesday, 06 March 2018, 09:29 GMT
Last edited by Antonio Rojas (arojas) - Tuesday, 13 March 2018, 07:22 GMT
Task Type Bug Report
Category Packages: Extra
Status Closed
Assigned To Eric Belanger (Snowman)
Antonio Rojas (arojas)
Architecture All
Severity Medium
Priority Normal
Reported Version
Due in Version Undecided
Due Date Undecided
Percent Complete 100%
Votes 0
Private No

Details

Over the last two weeks I have been locking my laptop with xscreensaver, closing the lid to suspend, only to find the next morning my session is unlocked. It is random, and cannot reproduce it, but it is serious enough that I can no longer use it in my workplace.

A quick Google reveals that there has been issues (for a number of years) with forcing an xscreensaver crash indeed unlocks the user session. This was news to me.

Packages that are most likely pertinent to my bug:

xscreensaver 5.38-1
xorg-server 1.19.6+13+gd0d1a694f-1
stumpwm (https://github.com/stumpwm/stumpwm)

Still trying to find a way to reproduce it, and figuring out a way to understand what is crashing xscreensaver overnight during suspend.
This task depends upon

Closed by  Antonio Rojas (arojas)
Tuesday, 13 March 2018, 07:22 GMT
Reason for closing:  Not a bug
Additional comments about closing:  See comments
Comment by Doug Newgard (Scimmia) - Tuesday, 06 March 2018, 16:39 GMT
Without any information about the crashes, this is totally useless.
Comment by Tom Herbert (mashdot) - Tuesday, 06 March 2018, 17:09 GMT
Sorry, yes I am now logging overnight to see if it happens again.
Comment by Tom Herbert (mashdot) - Wednesday, 07 March 2018, 09:16 GMT
I have attached the xscreensaver log, it appears to repeat the following until it dies...

---
xscreensaver: signal: 1: child pid 28047 (energystream) terminated with signal 15.
xscreensaver: signal: 0: child pid 28046 (energystream) terminated with signal 15.
xscreensaver: 21:12:33: 0: visual 0x20 (TrueColor, depth: 24, cmap: 256)
xscreensaver: 21:12:33: 0: saver window is 0x16001af.
xscreensaver: 21:12:33: 0: destroyed old saver window 0x16001ab.
xscreensaver: 21:12:33: 0: spawning "energystream -root" in pid 28337.
xscreensaver: 21:12:33: 1: visual 0x20 (TrueColor, depth: 24, cmap: 256)
xscreensaver: 21:12:33: 1: saver window is 0x16001b1.
xscreensaver: 21:12:33: 1: destroyed old saver window 0x16001ad.
xscreensaver: 21:12:33: 1: spawning "energystream -root" in pid 28338.
xscreensaver: 21:15:33: 0: killing pid 28337 (energystream)
xscreensaver: 21:15:33: 1: killing pid 28338 (energystream)
xscreensaver: signal: 1: child pid 28338 (energystream) terminated with signal 15.
xscreensaver: signal: 0: child pid 28337 (energystream) terminated with signal 15.
xscreensaver: 21:15:33: 0: visual 0x20 (TrueColor, depth: 24, cmap: 256)
xscreensaver: 21:15:33: 0: saver window is 0x16001b3.
xscreensaver: 21:15:33: 0: destroyed old saver window 0x16001af.
xscreensaver: 21:15:33: 0: spawning "energystream -root" in pid 28595.
xscreensaver: 21:15:33: 1: visual 0x20 (TrueColor, depth: 24, cmap: 256)
xscreensaver: 21:15:33: 1: saver window is 0x16001b5.
xscreensaver: 21:15:33: 1: destroyed old saver window 0x16001b1.
xscreensaver: 21:15:33: 1: spawning "energystream -root" in pid 28596.
xscreensaver: 21:18:33: 0: killing pid 28595 (energystream)
xscreensaver: 21:18:33: 1: killing pid 28596 (energystream)
xscreensaver: signal: 0: child pid 28595 (energystream) terminated with signal 15.
xscreensaver: signal: 1: child pid 28596 (energystream) terminated with signal 15.
XIO: fatal IO error 10 (No child processes) on X server ":0.0"
after 21085 requests (21085 known processed) with 1 events remaining.
---

Tonight I will test with another screensaver as perhaps "energystream" is to blame.
   xscreensaver.log (24.4 KiB)
Comment by Jan de Groot (JGC) - Wednesday, 07 March 2018, 09:32 GMT
I don't see anything special in your log. Energystream is killed and respawned every few minutes. Probably xscreensaver is configured to switch screensaver every few minutes, but with just one screensaver active it will restart the same one over and over again.
The XIO fatal IO error at the end is X exiting because the last child process exited.
Comment by Tom Herbert (mashdot) - Wednesday, 07 March 2018, 10:55 GMT
I can confirm that xscreensaver was set to a single screensaver choice, but told to cycle every 3 minutes. I have set it to not cycle "0 mins" and will watch what happens overnight.
Comment by Tom Herbert (mashdot) - Friday, 09 March 2018, 11:18 GMT
OK so the issue is the cycling. Making sure it is set not to cycle when using a single screensaver does not cause unlocking.

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