我有一台东芝 L 50 B 笔记本电脑，安装了 Linux Debian 9，但双显卡有问题。AMD 卡没有驱动程序，因此无法使用，而且整个图形性能非常低，即使是玩简单的视频游戏（如上一代的 SuperTuxKart）也是如此。我尝试在 AMD 网站上搜索安装驱动程序，但只支持其他发行版；我安装了它们，但我的电脑每次启动时都会崩溃（但现在我卸载了驱动程序，可以启动了）。
另外，我的计算机在做任何事情时都非常慢，尤其是加载窗口，这可能是使用图形加速的 XWINDOW 的问题：任何事情使用它，然后整体速度就会变慢。
请帮助我并为英特尔卡和 AMD 卡建议正确的驱动程序；开源和专有都很好！
utente@JJjjo:~$ lspci -k
00:00.0 Host bridge: Intel Corporation Broadwell-U Host Bridge -OPI (rev 09)
Subsystem: Toshiba America Info Systems Broadwell-U Host Bridge -OPI
00:02.0 VGA compatible controller: Intel Corporation HD Graphics 5500 (rev 09)
Subsystem: Toshiba America Info Systems HD Graphics 5500
Kernel driver in use: i915
Kernel modules: i915
00:03.0 Audio device: Intel Corporation Broadwell-U Audio Controller (rev 09)
Subsystem: Toshiba America Info Systems Broadwell-U Audio Controller
Kernel driver in use: snd_hda_intel
Kernel modules: snd_hda_intel
00:14.0 USB controller: Intel Corporation Wildcat Point-LP USB xHCI Controller (rev 03)
Subsystem: Toshiba America Info Systems Wildcat Point-LP USB xHCI Controller
Kernel driver in use: xhci_hcd
Kernel modules: xhci_hcd
00:16.0 Communication controller: Intel Corporation Wildcat Point-LP MEI Controller #1 (rev 03)
Subsystem: Toshiba America Info Systems Wildcat Point-LP MEI Controller
Kernel driver in use: mei_me
Kernel modules: mei_me
00:1b.0 Audio device: Intel Corporation Wildcat Point-LP High Definition Audio Controller (rev 03)
Subsystem: Toshiba America Info Systems Wildcat Point-LP High Definition Audio Controller
Kernel driver in use: snd_hda_intel
Kernel modules: snd_hda_intel
00:1c.0 PCI bridge: Intel Corporation Wildcat Point-LP PCI Express Root Port #1 (rev e3)
Kernel driver in use: pcieport
Kernel modules: shpchp
00:1c.2 PCI bridge: Intel Corporation Wildcat Point-LP PCI Express Root Port #3 (rev e3)
Kernel driver in use: pcieport
Kernel modules: shpchp
00:1c.3 PCI bridge: Intel Corporation Wildcat Point-LP PCI Express Root Port #4 (rev e3)
Kernel driver in use: pcieport
Kernel modules: shpchp
00:1c.4 PCI bridge: Intel Corporation Wildcat Point-LP PCI Express Root Port #5 (rev e3)
Kernel driver in use: pcieport
Kernel modules: shpchp
00:1d.0 USB controller: Intel Corporation Wildcat Point-LP USB EHCI Controller (rev 03)
Subsystem: Toshiba America Info Systems Wildcat Point-LP USB EHCI Controller
Kernel driver in use: ehci-pci
Kernel modules: ehci_pci
00:1f.0 ISA bridge: Intel Corporation Wildcat Point-LP LPC Controller (rev 03)
Subsystem: Toshiba America Info Systems Wildcat Point-LP LPC Controller
Kernel driver in use: lpc_ich
Kernel modules: lpc_ich
00:1f.2 SATA controller: Intel Corporation Wildcat Point-LP SATA Controller [AHCI Mode] (rev 03)
Subsystem: Toshiba America Info Systems Wildcat Point-LP SATA Controller [AHCI Mode]
Kernel driver in use: ahci
Kernel modules: ahci
00:1f.3 SMBus: Intel Corporation Wildcat Point-LP SMBus Controller (rev 03)
Subsystem: Toshiba America Info Systems Wildcat Point-LP SMBus Controller
Kernel modules: i2c_i801
01:00.0 Unassigned class [ff00]: Realtek Semiconductor Co., Ltd. RTS5229 PCI Express Card Reader (rev 01)
Subsystem: Toshiba America Info Systems RTS5229 PCI Express Card Reader
Kernel driver in use: rtsx_pci
Kernel modules: rtsx_pci
07:00.0 Network controller: Intel Corporation Wireless 3160 (rev cb)
Subsystem: Intel Corporation Dual Band Wireless AC 3160
Kernel driver in use: iwlwifi
Kernel modules: iwlwifi
08:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller (rev 0c)
Subsystem: Toshiba America Info Systems RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller
Kernel driver in use: r8169
Kernel modules: r8169
09:00.0 Display controller: Advanced Micro Devices, Inc. [AMD/ATI] Topaz XT [Radeon R7 M260/M265 / M340/M360 / M440/M445]
Subsystem: Toshiba America Info Systems Radeon R7 M260
utente@JJjjo:~$