Same for me, I am not able to use Xubuntu without "nomodeset" in grub. Usualy after login to XFCE is is freezed and I have to power off my notebook by holding of power button.
My configuration: System: Host: tomas-ntb Kernel: 5.3.8-050308-generic x86_64 bits: 64 Desktop: Xfce 4.12.3 Distro: Ubuntu 18.04.3 LTS Machine: Device: laptop System: HP product: HP EliteBook 745 G5 serial: N/A Mobo: HP model: 83D5 v: KBC Version 08.50.00 serial: N/A UEFI [Legacy]: HP v: Q81 Ver. 01.08.00 date: 07/16/2019 CPU: Quad core AMD Ryzen 3 PRO 2300U w/ Radeon Vega Mobile Gfx (-MCP-) cache: 2048 KB clock speeds: max: 2000 MHz 1: 1243 MHz 2: 1229 MHz 3: 1235 MHz 4: 1453 MHz Graphics: Card: Advanced Micro Devices [AMD/ATI] Raven Ridge [Radeon Vega Series / Radeon Vega Mobile Series] Display Server: x11 (X.Org 1.20.4 ) drivers: fbdev,ati (unloaded: modesetting,vesa,radeon,amdgpu) Resolution: 1920x1080@77.00hz OpenGL: renderer: llvmpipe (LLVM 9.0, 128 bits) version: 3.3 Mesa 19.2.0-devel -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1849170 Title: Unable to boot without nomodeset - complete freeze To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux-signed-hwe/+bug/1849170/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs