Sunday, January 18, 2015

Gigabyte Z97X-UD5H Stock Voltage Issue

As mentioned in the build log post back a bit, when combined with an i7 4790K the Gigabyte Z97X-UD5H has an issue at stock settings where (it appears) to auto-overclock to CPU, bumps the voltage way too high, and causes an immediate power shutdown.

Manually overclocking the board should fix this problem, but I found (with a bit of help) there are three other ways you can fix it by changing some settings in the BIOS:

  • Disable the Turbo Boost in the BIOS (as per this superuser answer). The setting can be found in M.I.T => Advanced Frequency Settings => Advanced CPU Core Settings => Intel Turbo Boost.
  • Turn off the "K OC" setting in Advanced CPU Core Settings.
  • Reset the CMOS (using the "clear CMOS" button on the board is okay), then start the machine and choose "Load Optimised Defaults" from the menu that pops up.

This thread at Intel's forum has information from many 4790K users on problems and test results they've found:

Saturday, January 10, 2015

Yet Another Canon Printer Linux Driver Install

After going round the loop with my Canon MF-4140 time or two before, I had to print something today and found I needed a slightly different process this time on Kubuntu 14.04.

There now appears to be a 64-bit driver for the MF-4100 series on Linux, which I downloaded from here.

After installing the two .deb files (cups-common and the cndrvcups-ufr2), the printer driver was available in the Add Printer dialog. It still didn't work though, despite appearing to install, accept and complete jobs. The trick was revealed by the answer in this askubuntu question, to search for missing dependencies for the .so libraries in the driver source tree. I installed lib32stdc++6, but as Dan Menes also discovered, it was the 32-bit version of libxml2 (sudo apt-get install libxml2:i386) that finally gets the thing to work.