Installation of debian 9 on DL20 Gen9

[senobogos]

Hi,

I have installed debian 9.3 on DL20 Gen9, in legacy mode i have changed the controler to AHCI SATA mode. When Debian 9.3 start, what happen is that the screen of the system appear like on the picture. I don't know what to do

[Jimmy Vance]

No need to use legacy mode, just set the controller to SATA AHCI in default UEFI.  The image looks like the kernel is setting a video mode that the monitor isn't happy with. switch over to tty2 which is just a text console and see if you have the login screen.  You will need to adjust the display modes

[senobogos]

yes i have the console. how to adjust the display modes?

[Jimmy Vance · Accepted solution]

you can try using 'nomodeset' on the boot line to stop KMS. You will need to try various resolution options to find something your monitor is happy with.   A quick google search returned this https://www.linux.org/threads/monitor-resolution-problem.16606/

[senobogos]

I used nomodeset on the boot and it is working now. thank you