Primarily as a reminder to myself, here’s a small script droppable into ~/bin that allows switching between two custom Linux screen resolutions, that is, resolutions the X server does not necessarily already know about, from the command line.
Changing Dell Wireless 5809e / Sierra Wireless EM7305 USB composition (MBIM, QMI, AT interface, NMEA)
Here’s a small update to my post from last year on Dell Wireless 5809e support in Linux – a followup.
Setting the MTU on NetworkManager connections
It is August 2015. Unfortunately it is still not possible to manually specify the MTU to be used on non-Ethernet NetworkManager connections (eg. VPN connections but also PPP).
Dell Wireless 5809e support in Linux – a followup
Here’s a followup on my previous post Dell Wireless 5809e support in openSUSE 13.2.
Fixing wireless regulatory support (crda, wireless-regdb) on openSUSE Tumbleweed
On recent SUSE-based distributions such as openSUSE Tumbleweed (and potentially also 13.2), executing iw reg get to check your WiFi device’s regulatory setup will likely get you an output such as this: global country 00: DFS-UNSET (2402 – 2472 @ 40), (N/A, 20), (N/A) (2457 – 2482 @ 40), (N/A, 20), (N/A), NO-IR (2474 -… Continue reading Fixing wireless regulatory support (crda, wireless-regdb) on openSUSE Tumbleweed
Correcting the soundcard order with onboard sound and HDMI output
Like many current devices with HDMI output, my Latitude E7450 offers multiple sound cards but configures the HDMI output as sound card 0 (the default). And xfce’s default sound mixer doesn’t offer switching the default output… To correct the soundcard order, add this to your /etc/modprobe.d/50-sound.conf (valid for openSUSE 13.2, probably other distros as well):… Continue reading Correcting the soundcard order with onboard sound and HDMI output
Dell Wireless 5809e support in openSUSE 13.2
This post is about getting the LTE card to work that gets built into current Dell Notebooks such as the Latitude E5450/E7450:
The shortcomings of the Linux LEDs API
In a recent post I mentioned that the Linux kernel has a dedicated API for LEDs. This API is composed of the drivers/leds/ directory and the additional <linux/leds.h> include file, Documentation exists in form of the Documentation/leds-class.txt file. To quote: “The underlying design philosophy is simplicity. LEDs are simple devices and the aim is to… Continue reading The shortcomings of the Linux LEDs API