Yes, I tried to make video accel work but didn't succeed. There's a vaapi driver for vdpau, but it crashes when I try using it. In some firefox issue there was

Yes, I tried to make video accel work but didn't succeed. There's a vaapi driver for vdpau, but it crashes when I try using it. In some firefox issue there was someone mentioning that video accel needs dmabuf, which needs gbm, so the 490 driver might solve the issue.