I'm on a laptop with Intel Core Ultra 275HX and nVidia RTX 5070Ti Laptop GPU and just installed Kubuntu alongside Windows (on the same drive, if that matters). This morning I saw a system update in Discover and I installed it. After rebooting however I found my screen black. By rebooting into recovery then into desktop I discovered my iGPU was no longer identified in "about" section (it was fine yesterday and before the update). It says "llvmpipe" while my dGPU had no issue showing up. Seems like some driver-related issue. I tried to reinstall Intel's drivers but (maybe because I'm new to Linux) I just couldn't find the right source for it. Does anyone have a solution to this problem?
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edit: I'm on Kubuntu 25.10, Linux kernel 6-17.0-6-generic, Plasma 6.4.5, Wayland -
Seems like this problem is solbed by ... booting into Windows? I'm really confused right now.Comment
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You probably need to disable Windows Fast Startup and/or disable any fast start option in your BIOS.
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I have disabled them. In fact I never touched the BIOS after installing Kubuntu. Some Windows update reboot seems just *magically* solved the problem. Now there's nothing wrong in both systems. Thank you for replying tho.Originally posted by claydoh View PostComment
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These two things are the most common causes for hardware issues that seem to resolve after booting to Windows.Originally posted by Prime54601 View Post
The BIOS fast boot (if it has such an option) skips hardware identification/setup. The Windows fast reboot is a hibernation sort of state that can lock out or affect hardware with it's saved states.
Spitballing here:
Secure boot might be a third thing, though I don't think it is very likely with Intel iGPUs.
I can imagine Windows loading a different firmware for the iGPU or something involving it, maybe though they are usually the same as far as In can tell.Comment
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