On Tuesday 06 February 2018 16:21:43 Pali Rohár wrote: > Hi! I'm periodically getting following message in dmesg on Lenovo > Thinkpad X1 Carbon 3rd generation: > > [drm] Reducing the compressed framebuffer size. This may lead to less power > savings than a non-reduced-size. Try to increase stolen memory size if > available in BIOS. > > In BIOS I already set GPU size to 512M, but this did not help. Also > update to last BIOS version did not help. > > So why this message is periodically print in dmesg? And what can I do > with this problem? > > And why cannot Linux kernel allocate itself more memory for GPU (if BIOS > can/could do that)? Is not 512MB for GPU enough?
And here is output from lspci, which clearly says that 512MB is already set for GPU: $ lspci -v -s 00:02.0 00:02.0 VGA compatible controller: Intel Corporation HD Graphics 5500 (rev 09) (prog-if 00 [VGA controller]) Subsystem: Lenovo HD Graphics 5500 Flags: bus master, fast devsel, latency 0, IRQ 46 Memory at e0000000 (64-bit, non-prefetchable) [size=16M] Memory at c0000000 (64-bit, prefetchable) [size=512M] I/O ports at 3000 [size=64] [virtual] Expansion ROM at 000c0000 [disabled] [size=128K] Capabilities:  MSI: Enable+ Count=1/1 Maskable- 64bit- Capabilities: [d0] Power Management version 2 Capabilities: [a4] PCI Advanced Features Kernel driver in use: i915 Kernel modules: i915 -- Pali Rohár pali.ro...@gmail.com _______________________________________________ Intel-gfx mailing list Intelemail@example.com https://lists.freedesktop.org/mailman/listinfo/intel-gfx