A couple of months ago the version 4 Linux kernel finally got stable and I started using it – great! Except for the current latest version, 4.2.0-27, which had a regression, giving filesystem write errors. So I’m running 4.2.0-25. But this is no big deal, since they’re all variants of 4.2.0, TLP power management works on all of them with the same version of linux-tools-common.

Another benefit: back when I first got this laptop in Aug, I had to change the video mode from SNA to UXA. Without this change, it had black or garbled screens on wake from suspend. SNA is faster than UXA, though it’s not a big difference. I tried switching back to SNA and it works now. So, no need to edit /usr/share/X11/xorg.conf.d/20-intel.conf to set this mode anymore.

Overall, the laptop is running great: all features working, fast and reliable. Ubuntu 15.10 and the kernel have stabilized to the point where it’s boring and highly productive. It just works.

The only problem I’ve encountered is that Gephi crashes whenever it tries to display a graph. This happens both in UXA and SNA. It starts up fine, so this appears to be a problem with the way Gephi uses OpenGL. Other OpenGL apps work fine, so it’s not necessarily a driver problem. And Gephi works fine on my desktop, which is also running Ubuntu 15.10.