Hi，各位好
本人有一台Intel核显+AMD独显的Dell笔记本，因为AMD的私有驱动不能支持新的X.Org，所以想玩游戏的时候只能加参数指定显卡(DRI_PRIME=1)。指定AMD玩游戏（Dota2/CSGO）会突然卡死，偶然间测了下，发现AMD显卡性能异常低下！有两个问题想请求下各位：
1.是我的测试方法不对吗？
2.还有办法在Debian 9 上安装AMD Catalyst Control Center么？我切不了显卡。。。
配置信息：
roy@dev:~$ screenfetch
_,met$$$$$gg. roy@dev
,g$$$$$$$$$$$$$$$P. OS: Debian 9.3 stretch
,g$$P"" """Y$$.". Kernel: x86_64 Linux 4.14.0-0.bpo.3-amd64
,$$P' `$$$. Uptime: 1h 58m
',$$P ,ggs. `$$b: Packages: 2602
`d$$' ,$P"' . $$$ Shell: bash 4.4.12
$$P d$' , $$P Resolution: 1920x1080
$$: $$. - ,d$$' DE: Gnome
$$\; Y$b._ _,d$P' WM: GNOME Shell
Y$$. `.`"Y$$$$P"' WM Theme: Adwaita
`$$b "-.__ GTK Theme: Adwaita [GTK2/3]
`Y$$ Icon Theme: Adwaita
`Y$$. Font: Noto Sans CJK SC 12
`$$b. CPU: Intel Core i7-7500U CPU @ 3.5GHz
`Y$$b. GPU: Mesa DRI Intel(R) HD Graphics 620 (Kabylake GT2)
`"Y$b._ RAM: 4847MiB / 19945MiB
roy@dev:~$ lspci -nnk | grep -E "VGA|Dis" -A3
00:02.0 VGA compatible controller [0300]: Intel Corporation Device [8086:5916] (rev 02)
Subsystem: Dell Device [1028:0794]
Kernel driver in use: i915
Kernel modules: i915
--
01:00.0 Display controller [0380]: Advanced Micro Devices, Inc. [AMD/ATI] Sun LE [Radeon HD 8550M / R5 M230] [1002:666f]
Subsystem: Dell Sun LE [Radeon HD 8550M / R5 M230] [1028:0794]
Kernel driver in use: radeon
Kernel modules: radeon, amdgpu
roy@dev:~$ xrandr --listproviders
Providers: number : 2
Provider 0: id: 0x76 cap: 0xf, Source Output, Sink Output, Source Offload, Sink Offload crtcs: 3 outputs: 4 associated providers: 0 name:modesetting
Provider 1: id: 0x4f cap: 0xd, Source Output, Source Offload, Sink Offload crtcs: 0 outputs: 0 associated providers: 0 name:HAINAN @ pci:0000:01:00.0
测试一下：
# Intel 集显
roy@dev:~$ DRI_PRIME=0 vblank_mode=0 glxgears
ATTENTION: default value of option vblank_mode overridden by environment.
ATTENTION: default value of option vblank_mode overridden by environment.
39719 frames in 5.0 seconds = 7943.673 FPS
37063 frames in 5.0 seconds = 7412.439 FPS
32327 frames in 5.0 seconds = 6465.186 FPS
33359 frames in 5.0 seconds = 6671.724 FPS
31272 frames in 5.0 seconds = 6254.299 FPS
# AMD 独显
roy@dev:~$ DRI_PRIME=1 vblank_mode=0 glxgears
ATTENTION: default value of option vblank_mode overridden by environment.
14097 frames in 5.0 seconds = 2819.355 FPS
16608 frames in 5.0 seconds = 3321.540 FPS
15826 frames in 5.0 seconds = 3165.040 FPS
15487 frames in 5.0 seconds = 3097.366 FPS
16625 frames in 5.0 seconds = 3324.930 FPS