cr4nkz
UBUniversal Blue
•Created by cr4nkz on 1/23/2025 in #🛟bazzite-help
eGPU only getting PCIe 1.1 (2.5 GT/s)
Hello everyone, it's me again. When i try to use an AMD eGPU (7700xt), i only get PCIe 1.1 (2.5 GT/s) speeds instead of PCIe 3.0 speeds (8 GT/s) according to sudo lspci -vv.
Also, the AMD Link speed fix from all-ways-egpu github doesnt work: Create a file named: /etc/modprobe.d/amd-pcie-fix.conf with the following content: options amdgpu pcie_gen_cap=0x40000
Hardware:
Lenovo Legion Go
ADT-Link UT3G Adapter
550W PSU
RX 7700XT
Is there any help or hope for me? I really, really want to use Bazzite with eGPU!
Thank you very much in advance!
12 replies
UBUniversal Blue
•Created by cr4nkz on 1/20/2025 in #🛟bazzite-help
Problems with eGPU (7700xt) on Bazzite
Hello everyone, this is my first post here and i really love bazzite, but im not used to Linux, so please be gentle 🙂
Here is my hardware:
Device: Lenovo Legion Go
eGPU: Radeon RX 7700xt
eGPU Adapter: ADT-Link UT3G
Script: All Ways eGPU for Linux
Here is my problem:
Setup was pretty easy and everything works out of the box for the most part. In most games, i have a strange behavior with frames: The frame rate is much higher compared with the iGPU, but every like 5 seconds, my frames need significantly longer to render. Frame times then are spiking as crazy, making everything impossible to play. After one second, everything is back to normal, then repeats. Funny thing is: Windows does not do that, frame times are crispy clean there, so it has to do with bazzite i guess.
Things i have already tried:
- Another TB 4 Cable from cable matters
- disabling cpu boost
- different CPU scheduler
- setting TB Mode on UT3G to pcie+pd
- applying AMD fixes mentioned on the All ways egpu github Page
Is there anything i can try, because for most people, egpu seems to work flawlessly. Help is much appreciated!
Thank you very much guys
2 replies