Running Plasma on LEAP 42.2, I’ve been experiencing frequent total freezes of the system. The mouse cursor would stop moving, and the laptop wouldn’t reply to ping anymore. That happens several times a day, and of course nothing shows up in the logs at the time of the freeze (but I’m not very proficient with journalctl yet, I may have missed something).
The laptop is a Lenovo T460 with a VGA adapter and I’m running KDE/Plasma, so my first reaction was to follow the recommendation to use “UXA” acceleration on the Intel driver, without success. Then I also tried the X.org “modesetting” driver, but that didn’t help either.
The problems began on Monday morning, when I started using the kernel-default 4.4.36-5.1, and persisted with the upgrade to kernel-default 4.4.36-8.1.
I’ve downgraded the kernel back to 4.4.27-2.1 yesterday morning, and haven’t had any lockup since.
Still no freeze since I downgraded to kernel-default-4.4.27-2.1.x86_64. Every other package is up to date, according to the software update applet in plasma.
Considering this is my work laptop and it was consistently freezing several times a day with more recent kernels, I’m glad there’s this workaround.
Seeing the same problem here, with kernel 4.4.36-8. No VGA adapter involved - just using the laptop with no peripherals and the lock-ups still happen. Model is Lenovo Thinkpad T460s.
Will try the downgrade to kernel 4.4.27 and see if that helps.