[opensuse] optimus and meltdown fix
Hi, I just rebooted my TW laptop with the latest, meltdown-fixed kernel (4.14.11-1). Indeed the meltdown-exploit test shows it as NOT VULNERABLE Great. But the computer has an optimus graphics (HD530+940MX), so I had a look at the standard test, optirun glxspheres. It runs at ~49 fps! This used to be 60 (refresh rate of the screen), so that would suggest an 18% performance drop :o Just tried to verify the old numbers, as also the nvidia driver had been upgraded (384.98->111, though the changelog doesn't mention anything strange) I rebooted the previous kernel, 4.14.9-1. Unfortunately™ the update had also updated bbswitch-kmp-default and removed the neccessary module for the previous kernel. Shouldn't those allow multi-version and stay installed when a newer kernel comes in? It's not that the old kernel boot option is useless that way, but it's clearly flawed :( So no reconfirmed old number on the fps. But almost 20% - wow. Didn't someone state programs like games should not be affected too much? I'll try a boot with nopti now and see what happens.... -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org To contact the owner, e-mail: opensuse+owner@opensuse.org
Peter Suetterlin wrote:
I'll try a boot with nopti now and see what happens....
Hmm. Runs at the same, slow speed. It seems it's not the meltdown patch. So rather the nvidia driver update? I had just tried using the old 384.98 modules for the 4.14.11 kernel, but with those optirun doesn't run either, I do get a permission error, [ 695.224915] [ERROR]Cannot access secondary GPU - error: [XORG] (EE) /dev/dri/card0: failed to set DRM interface version 1.4: Permission denied Has anyone else seen slowdowns of video performance? -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org To contact the owner, e-mail: opensuse+owner@opensuse.org
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Peter Suetterlin