"No signal" on DisplayPort on boot and low resolution

Discussion created by ouck_02 on Aug 18, 2018
Latest reply on Aug 29, 2018 by ouck_02



I buy a DP to VGA adapter and it works but only on Windows.

"no signal" on BOOT/POST, "no signal" on Windows loading logo, image appears only on Windows login screen ???

If I boot on linux "no signal" at all. It's a strange problem.


This adapter needs no driver and is active: Delock Produkte 61848 Delock Adapter DisplayPort 1.2 Stecker > VGA Buchse schwarz


MB: ASRock Z68 Pro3-M

CPU: Intel Core i7 2600K

RAM: 4x4Go Corsair Dominator

GPU: XFX Radeon RX480 8Go with 3 DisplayPort 1.4

PSU: Corsair 620W 80%

Monitor: IIyama ProLite E2403WS 1920x1200 16/10

OS: Win7 SP1, Linux Mint 18

AMD driver: 18.8.1


And I have a second problem: Windows shows me max resolution 1600*1200 and not 1920*1200.