Can’t log into Azure tenant after resetting Microsoft authenticator

Organisations which manage identities and user authentication with Office365 account use single sign on for web-, desktop- and mobile apps. The user experience usually consists of a web-based login form and a second-factor notification on the Microsoft authenticator app or an SMS sent to the phone. Microsoft login screen The authenticator app can manage multiple … Continue reading Can’t log into Azure tenant after resetting Microsoft authenticator →

Driver does not support any RC mode compatible with selected options (supported modes: CQP)

Rendering a video with KDEnlive 22.08.1 under Ubuntu 22.04 on the Acer Nitro5 with the hardware accelerated VAAPI Intel H264 profile aborts with this error: Driver does not support any RC mode compatible with selected options (supported modes: CQP). I'm not deep enough into the KDEnlive architecture to understand what I'm doing, my superficial understanding … Continue reading Driver does not support any RC mode compatible with selected options (supported modes: CQP) →

Acer Nitro 5 power button broken in Ubuntu 20.04

After an BIOS update, the Acer Nitro 5's power button doesn't work any more under Ubuntu 20.04. The smart folks at Mint figured out [1] what's wrong, but I couldn't get their solution working and I've long given up on opening launchpad bugs just to watch them triage. Also I love a good workaround, so … Continue reading Acer Nitro 5 power button broken in Ubuntu 20.04 →

Slow rsync on ext4 filesystem

On a rather hefty rsync job between two local ext4 filesystems, writing on the target (a mechanical hard drive which should be able to sustain 100 mb/s) would fluctuate strongly (between 0 mb/s and 160 mb/s) and effectively slow down to a few mb/s on average after a few minutes. While I didn't find the … Continue reading Slow rsync on ext4 filesystem →

Ubuntu 20.04 not resolving local network hostnames

An Ubuntu 20.04 laptop installation started not being able to resolve the names of hosts in the same local network. Although the host names were registered with the router, the laptop wouldn't be able to resolve those host names. Surprisingly, neither netbios resolution worked (although nbtscan would find those hosts). The solution is to bypass … Continue reading Ubuntu 20.04 not resolving local network hostnames →