ubuntu頻繁死機--獨立顯卡問題

• 問題：筆記本安裝ubuntu時以及裝好后有時會出現花屏、死機的問題，系統報錯

*ERROR* UVD not responding, trying to reset the VCPU!!! *ERROR* UVD not responding, trying to reset the VCPU!!!

*ERROR* UVD not responding, trying to reset the VCPU!!! *ERROR* UVD not responding, trying to reset the VCPU!!!

*ERROR* UVD not responding, trying to reset the VCPU!!! *ERROR* UVD not responding, trying to reset the VCPU!!!

*ERROR* UVD not responding, trying to reset the VCPU!!! *ERROR* UVD not responding, trying to reset the VCPU!!!

*ERROR* UVD not responding, trying to reset the VCPU!!! *ERROR* UVD not responding, trying to reset the VCPU!!!

*ERROR* UVD not responding, trying to reset the VCPU!!! *ERROR* UVD not responding, trying to reset the VCPU!!!

*ERROR* UVD not responding, trying to reset the VCPU!!!

• 原因：系統缺少獨立顯卡的驅動
• 解決：修改啟動配置文件，將獨立顯卡的設置為開機不加載，具體配置如下： 

　　sudo nano /etc/default/grub

　　將里面的

　　GRUB_CMDLINE_LINUX=""

　　改為

　　GRUB_CMDLINE_LINUX="radeon.modeset=0"

　然后保存文件並更新grub

　　sudo update-grub

　更新完成后重啟
　如果上面的方式不能解決問題，可以嘗試將

　　GRUB_CMDLINE_LINUX="radeon.modeset=0"

　　更改為

　　GRUB_CMDLINE_LINUX="nomodeset"

　　注：通過dmesg查詢錯誤信息

　　dmesg | grep radeon