Wednesday, May 31, 2017

Re: Blank screen after boot with Radeon HD 5450

Maximilian Pichler <maxim.pichler@gmail.com> writes:

> If and when I get my hands on another monitor I'll definitely try it
> out. (Although ultimately it would be nice to get it working with this
> one, as it works fine under Linux. This is a Dell U2515H.)

Interesting, that's the same model I have.

You may be able to get a higher resolution by decreasing the refresh rate:

$ gtf 2560 1440 33

# 2560x1440 @ 33.00 Hz (GTF) hsync: 48.44 kHz; pclk: 162.77 MHz
Modeline "2560x1440_33.00" 162.77 2560 2688 2960 3360 1440 1441
1444 1468 -HSync +Vsync

$ xrandr --newmode 2560x1440_33.00 162.77 2560 2688 2960 3360 1440
1441 1444 1468 -HSync +Vsync
$ xrandr --addmode DVI-0 2560x1440_33.00
$ xrandr --output DVI-0 --mode 2560x1440_33.00

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