Yes, Coffee Lake requires the newer Mesa stack in backports, and the newest kernel you can find...then if you want to get hardware decoded video playback for your device, you may need to rebuild your video playback stack (ffmpeg and video players) against the newer Mesa, too, which is getting into more advanced territory...maybe I should set up an OBS repo with those things, since there will only be more and more Coffee Lake devices.
The Intel GPU uses the kernel's modesetting driver by default, but I found caused trouble with VLC and Compton. Using the "intel" driver instead solved those issues, but then it introduced its own bugs, such as video glitches in windowed games like 0ad, or video glitches after resuming from hibernation. I then tried building a newer git pull of the intel driver from a PPA than Debian has, since even Sid's dates back to 2017, and it seems all the glitches are gone now as far as I can tell.
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$ inxi -G
Graphics: Card-1: Intel driver: i915 v: kernel
Card-2: NVIDIA GP107M [GeForce GTX 1050 Ti Mobile] driver: N/A
Display: x11 server: X.Org 1.19.2 driver: intel resolution: 1920x1080~60Hz
OpenGL: renderer: Mesa DRI Intel UHD Graphics 630 (Coffeelake 3x8 GT2) v: 4.5 Mesa 18.1.3
This is with my own backported Mesa 18.1.3, though. Stretch-backports currently has 17.3.9.
All the firmware packages in Debian are also getting sadly outdated for new hardware and kernels, being 11 months old now. I did a manual git pull and install of the firmware from the upstream repo, but that's not the best solution.
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mkdir -p ~/linux
cd ~/linux
git clone https://git.kernel.org/pub/scm/linux/kernel/git/firmware/linux-firmware.git/
cd linux-firmware
sudo make install
The
MX Linux repositories: Backports galore! If we don't have something, just ask and we'll try--we like challenges. New packages: Clipgrab 3.8.6, Hedgewars 1.0.0, PulseEffects 4.6.8, Telegram-desktop 1.8.15, Pale Moon 28.7.2, KeepassXC 2.5.1