Fixing KERNEL PANIC! VFS: Unable to mount fs on unknown-block(0,0)
I had this on an Ubuntu 24.04 LTS which had updated the kernel. The problem is that there is no initramfs for the kernel version you are trying to boot.
Author Archive for: stefan
Entries by Stefan Helander
Macbook Air builtin camera on Ubuntu 24.04 LTS
When Apple decided that it was time for my MacBook Air model 2013 to die, by not supplying anymore OS updates, I decided to install Ubuntu instead of throwing a piece of perfectly working hardware away. The only reason this hardware was “obsolete” is because Apple decided it to be. The same behaviour goes for […]
VW e-up parking break adjustment
Adjusting the parking break on VW e-up is quite easy. It requires a couple of screwdrivers and a 10 mm wrench. In the bottom of the rear cup holder, use a little flat screwdriver to remove the screw cover.
Windows Server Task Scheduler not running tasks
When trying to enable or disable a task, an error message saying “The selected task “{0}” no longer exists, To see the current tasks, click Refresh” is displayed. When clicking the Refresh, the Task Scheduler is empty but if closed and reopened, the tasks are visible again. A similar scenario is described in this article. […]
FX-4C no power
Suddenly I had almost no power output at all on 12 meter band. It turned out that I had accidently turned the AF knob while transmitting and this set the power calibration wrong. To solve this, I did: Now the power calibration is done and the rig will output power as expected,
[Landscape Alert] N computers haven’t contacted Landscape within the last 5 minutes
Receiving emails from Ubuntu Landscape with warnings, subject line “[Landscape Alert] N computers haven’t contacted Landscape within the last 5 minutes“. Solution: Log in to the machine(s) mentioned in the warning and do:
Tuning the HF-P1 vertical antenna for 6m and 4m bands
According to the manual sheet you should just push the extender section to the bottom for 6m (50 MHz) but this did not work for me. Using a NanoVNA I could find a workable configuration for both 6m (50 MHz) and 4m (70 MHz) bands. For both bands I only used only one base pin […]
Importing an Anytone AT-D878UV codeplug into AT-D578UV, AT-D168UV or AT-890UV
To import a codeplug for Anytone AT-D878UV into the CPS for AT-D578UV or AT-D168UV, the only way is to export it to CSV from the AT-D878UV CPS and then import it. But for some strange reason, Anytone has decided to make the CSV formats slightly incompatible… Come on, Anytone. Why??? This bug/feature seems to be […]
FreePBX/Asterisk missing DID; how to force DID on trunk
If you get a SIP account from a provider which isn’t really a trunk it can be configured as a trunk in FreePBX but DID on incoming calls is set to “s” so it is impossible to get an inbound route working. The trunk in this case will only have one DID so a workaround […]
FreePBX extension receives call from wrong queue
It turned out that the extension earlier had been a dynamic agent for the queue, and it was logged in as an active agent for the queue when the extension was removed from the queue. This caused calls in the queue being sent to the extension still. Solution: Edit the Queue, add the extension as […]