WSL cannot access exFAT

If you have an external disk connected to your Windows and you try to access it via wsl, you will probably find nothing.

It is necessary to mount it manually:

mount -t drvfs d: /mnt/exdrive

Flutter is not building application

I migrated my flutter project to a new computer and after a while I realized that it is not building because of a strange CMake error.

How I fixed it?

flutter clean

then I deleted windows directory under my project

flutter create .

flutter run

And that is all!

Docker - "unable to allocate file descriptor table - out of memory"

I've tried to run some docker images from vulnhub - they have images with known CVEs like log4j etc.

It is easy, just run docker-compose up and you have it. Unfortunately I recieved a lot of errors and the reason was: "unable to allocate file descriptor table - out of memory". It is caused by changed ulimits in system.conf.

How to fix it?

You have to limit docker and it is necessary just to add following lines to docker compose file:

ulimits:
  nproc: 65535
  nofile:
    soft: 26677
    hard: 46677

Then everything will work again.
And if you'd like to run it directly from the commandline just run:

docker run --ulimit nproc=65535 --ulimit nofile=26677:46677 -d <your_image>




Hell with Dell U2422HE

I love this LCD. It is large enough and I can connect my computer via USB-C. Everything is connected to the monitor so my desk is relatively clean of cables. But then one day I updated the firmware and installed Dell Monitor Manager.

After a while, I realized that if the monitor goes to sleep mode, I can no longer connect it to it. The only way was to physically remove the electricity cable and start LCD again. 

One month later I decided to contact support. The next day I had a call and we talked about the options. I updated the firmware and updated the drivers. It did not help. 

In the end, I removed Dell Monitor Manager and realized that it was caused by it! Now my monitor is great again and I don't have to restart it again and again.

Lessons learned: If something is working, don't touch it!

Odinstalace FortiNet klienta 6.x

 Kdo to zkoušel, ten ví, že to je noční můra. V P5idat nebo ubrat programy je volba zašedlá a z klienta samotného také nic neuděláte. Jak na to?

Otevřete si klienta a odemkněte vlevo dole nastavení.

Následně si vpravo nahoře klikněte na další zámek a nastavte si heslo. Po tomto kroku Klienta ukončete.

Po znovuspuštění běžte do konfigurace, zadejte heslo a následně otevřete Přidat nebo ubrat programy. 

Hurá, volba je již klikatelná.

Důvod? FortiNet klient čeká, než bude nastavení odemčeno pomocí hesla. Když tam žádné heslo zadané nemáte, odinstalovat ho nemůžete...