Devices¶

Screen flickering with Intel graphics¶

Problem

The screen is flickering on devices with Intel graphics.

Solution

A possible cause can be buggy Intel graphics power management. You can try disabling it by adding the i915.enable_rc6=0 boot flag.

To do this from a running system and make it permanent, run the following terminal command:
```
EDITOR=gedit sudo -e /etc/default/grub
```
Feel free to replace gedit with the editor of your choice. The file /etc/default/grub will be opened in gedit with administrator privileges (so be careful with the next step).
Locate the GRUB_CMDLINE_LINUX line
Change it to look like this:
```
GRUB_CMDLINE_LINUX="i915.enable_rc6=0"
```
Save the file.
Run the following command in your terminal application:
```
sudo update-grub
```
Restart for this to take effect.

Problem

After upgrading from PureOS 9 to PureOS 10, an HP printer does not work despite being recognized properly.

Solution

It has been reported that removing ipp-usb is a workaround for this problem. Run this command:

sudo apt remove ipp-usb && sudo apt install hplip-gui