Intel i915 driver for ubuntu

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Intel i915 系列核显的驱动问题

前几天换了个8代i7的cpu和配套主板，装了双系统，Windows+LinuxMint，然后喜闻乐见地出现了驱动问题。
Mint开机之后一直提示处于软渲染模式下，分辨率也只有1024x768没法调。装了个Intel的Intel Graphics Update Tool for Linux也没有用，检查的时候就卡住了。

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Running in software rendering mode

Cinnamon is currently running without video hardware acceleration and, as a result, you may observe much higher than normal cpu usage.

There could be a problem with you drivers or some other issue. For the best experience, it is recommended that you only use this mode for troubleshooting purposes.

原来Ubuntu把Intel i915系列的驱动改为了alpha测试版，装系统时直接被忽略掉了。想安驱动需要在grub阶段加入内核参数：i915.alpha_support=1。

参考：
New PC Build - Ubuntu Not Using Intel Video Driver
Intel UHD Graphics 630 “Coffee Lake” On Linux

解决方式：

  • Install the latest video drivers:

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    sudo add-apt-repository ppa:oibaf/graphics-drivers
    sudo apt-get update

  • Install and use Grub Customizer to do it:

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    sudo add-apt-repository ppa:danielrichter2007/grub-customizer
    sudo apt update
    sudo apt install grub-customizer

  • Launch grub customizer, go to the General tab, and enter i915.alpha_support=1 under Kernel Parameters.

  • Reboot.

其中第一步是添加第三方驱动的源，第二步和第三步可以用其他方式代替，只要保证在启动的时候有i915.alpha_support=1这个参数就行。