Shocking deals!

Some users are reporting Kernel Panics (Purple Screen) after upgrading to the kernel 7.0.0-28 generic.

To solve this, you need to roll back to an older kernel version. This is accomplished following those steps:

1- Reboot the computer. The GRUB menu should open after the failed boot

2- Select advanced options

3- Select a kernel other than the affected one and press ENTER

The system should boot as normal.

Once you gain access, remove the affected kernel as following:

1- Open the Update manager

2- Click in Show > Linux Kernels

3- Click in Continue

4- Click in Remove Kernels

5- Select the Kernel version with problem (7.0.0-28 in this case) and click in Apply.

6- After it finish, reboot your computer.

7- If prompted again, DON'T update the kernel to the version with problem, wait when there is a even newer version that probably will bring fixes to this issue.

Edit: Saved this to a Github Gist too https://gist.github.com/fellipec/5eef599c4f743fe869460f6bbf2b8061

https://youtu.be/iqL6OPxg1zQ

A beautiful song that was featured in the movie Project Hail Mary, sung by the character of Sandra Hüller, in a very emotional karaoke scene.

First thing, I've an older Kindle 4 (with physical buttons yet!), a more newer Kindle 7 and a Paperwhite 2.

Because Amazon killed the support for my older one, and got me frustrated, I decided to jailbreak it and install KOReader.

Thanks so much devs! This software is amazing!

I enjoyed it so much that I installed on the other Kindles and on my phone too. Couldn't be happier how those e-readers behave now.

---

Then I tried to use the progress sync feature. On one of the Kindles it didn't work, always told me unknown server error. Well, decided to self-host the server, because I enjoy those things. Noticed it was a docker image, and well, I'm not much versed on docker. Anyway worked and I used for a while.

And noticed how simple it is. Super straightforward! Just a few endpoints and a simple storage. I decided I could as an exercise in programming, do it myself. too.

So I did. Written it in Go. Just a single executable file, mimics the behavior of the original as best as I could. Same ports, 7200 for the self-signed TLS certificate, 17200 for plain HTTP. You can provide your own certificate too. There is no database, no redis, no sqlite, the data is saved as a simple JSON file, by default, on the same folder as the executable is.

I really tried to keep it as simple as possible, using the built-in Go features to encode and decode the JSON, both for storing in the file and reading/sending the progress updates to the KOReader. It is just around 600 lines of code, and it worked like a charm!

I did it to my own use, but I thought some of you may want to take a look.

The usage is simple:

kosync-go by itself run with a self-signed certificate on port 7200

kosync-go --insecure run in port 17200 without cryptography. This is how I ran the official server before, because I already have a reverse proxy configured with my own certificates.

kosync-go --disable-new-users when you already set up your users and don't want people to create others.

Anyway, if any of you want to take a peek it lives here https://github.com/fellipec/kosync-go

And, once more, my thanks to the devs and community of KOReader for this amazing software!

Curitiba - Brazil

So now Windows folks can type ~ to reach their home folder too!

Nice, Microsoft! Just about 50 years late

Some folks only type the password once when run sudo visudo