2

Just did a regular ubuntu update on a laptop. Now in About>Details it says

Graphics: llvmpipe (LLVM 6.0, 256 bits)

It said "Intel Graphics (CofeeLake something...)" before the update. Also gnome-shell cpu usage went significantly up now. How to bring it back?

sudo lspci -v output (relevant lines):

VGA compatible controller: Intel Corporation UHD Graphics 620 (rev 07) (prog-if 00 [VGA controller])
Subsystem: Lenovo UHD Graphics 620
Flags: bus master, fast devsel, latency 0, IRQ 11
Memory at a0000000 (64-bit, non-prefetchable) [size=16M]
Memory at 90000000 (64-bit, prefetchable) [size=256M]
I/O ports at 3000 [size=64]
[virtual] Expansion ROM at 000c0000 [disabled] [size=128K]
Capabilities: [40] Vendor Specific Information: Len=0c <?>
Capabilities: [70] Express Root Complex Integrated Endpoint, MSI 00
Capabilities: [ac] MSI: Enable- Count=1/1 Maskable- 64bit-
Capabilities: [d0] Power Management version 2
Capabilities: [100] Process Address Space ID (PASID)
Capabilities: [200] Address Translation Service (ATS)
Capabilities: [300] Page Request Interface (PRI)
Kernel modules: i915
0

Fixed, using steps 1 and 2 of the answer here: Ubuntu 18.04 not working with Intel Integrated Graphics

It explains how to force Xorg to use intel drivers. It is still a mystery why it stopped using them in the first place.

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.