poloshiao 写了：显卡是A卡，驱动是官方驱动。
A 卡閉源驅動 常常跟 Linux-kernel
版本 捆綁
所以 Linux-kernel 升級 可能就會影響到 A 卡閉源驅動是否相容勝任
把下面指令 複製 貼進終端機 執行
1. uname -r
2. sudo lspci -knn
3. sudo lshw -numeric -class video
4. sudo ubuntu-drivers devices
把結果直接 選取/複製 貼上來
不必擷圖
我把官网驱动卸载了，没想到反而不卡了。
看到大神很激动，现在应该是ubuntu14.04默认驱动：
siriusy@siriusy-PC:~$ uname -r
3.13.0-53-generic
siriusy@siriusy-PC:~$ sudo lspci -knn
[sudo] password for siriusy:
00:00.0 Host bridge [0600]: Intel Corporation Xeon E3-1200 v3 Processor DRAM Controller [8086:0c08] (rev 06)
Subsystem: Gigabyte Technology Co., Ltd Device [1458:5000]
00:01.0 PCI bridge [0604]: Intel Corporation Xeon E3-1200 v3/4th Gen Core Processor PCI Express x16 Controller [8086:0c01] (rev 06)
Kernel driver in use: pcieport
00:14.0 USB controller [0c03]: Intel Corporation Device [8086:8cb1]
Subsystem: Gigabyte Technology Co., Ltd Device [1458:5007]
Kernel driver in use: xhci_hcd
00:16.0 Communication controller [0780]: Intel Corporation Device [8086:8cba]
Subsystem: Gigabyte Technology Co., Ltd Device [1458:1c3a]
Kernel driver in use: mei_me
00:19.0 Ethernet controller [0200]: Intel Corporation Ethernet Connection I217-V [8086:153b]
Subsystem: Gigabyte Technology Co., Ltd Device [1458:e000]
Kernel driver in use: e1000e
00:1a.0 USB controller [0c03]: Intel Corporation Device [8086:8cad]
Subsystem: Gigabyte Technology Co., Ltd Device [1458:5006]
Kernel driver in use: ehci-pci
00:1b.0 Audio device [0403]: Intel Corporation Device [8086:8ca0]
Subsystem: Gigabyte Technology Co., Ltd Device [1458:a182]
Kernel driver in use: snd_hda_intel
00:1c.0 PCI bridge [0604]: Intel Corporation Device [8086:8c90] (rev d0)
Kernel driver in use: pcieport
00:1c.3 PCI bridge [0604]: Intel Corporation Device [8086:8c96] (rev d0)
Kernel driver in use: pcieport
00:1d.0 USB controller [0c03]: Intel Corporation Device [8086:8ca6]
Subsystem: Gigabyte Technology Co., Ltd Device [1458:5006]
Kernel driver in use: ehci-pci
00:1f.0 ISA bridge [0601]: Intel Corporation Device [8086:8cc6]
Subsystem: Gigabyte Technology Co., Ltd Device [1458:5001]
00:1f.2 SATA controller [0106]: Intel Corporation Device [8086:8c82]
Subsystem: Gigabyte Technology Co., Ltd Device [1458:b005]
Kernel driver in use: ahci
00:1f.3 SMBus [0c05]: Intel Corporation Device [8086:8ca2]
Subsystem: Gigabyte Technology Co., Ltd Device [1458:5001]
01:00.0 VGA compatible controller [0300]: Advanced Micro Devices, Inc. [AMD/ATI] Pitcairn PRO [Radeon HD 7850] [1002:6819]
Subsystem: PC Partner Limited / Sapphire Technology Radeon HD 7850 2GB GDDR5 DVI-I/DVI-D/HDMI/DP [174b:e221]
Kernel driver in use: radeon
01:00.1 Audio device [0403]: Advanced Micro Devices, Inc. [AMD/ATI] Cape Verde/Pitcairn HDMI Audio [Radeon HD 7700/7800 Series] [1002:aab0]
Subsystem: PC Partner Limited / Sapphire Technology Device [174b:aab0]
Kernel driver in use: snd_hda_intel
03:00.0 PCI bridge [0604]: Intel Corporation 82801 PCI Bridge [8086:244e] (rev 41)
siriusy@siriusy-PC:~$ sudo lshw -numeric -class video
*-display
description: VGA compatible controller
product: Pitcairn PRO [Radeon HD 7850] [1002:6819]
vendor: Advanced Micro Devices, Inc. [AMD/ATI] [1002]
physical id: 0
bus info: pci@0000:01:00.0
version: 00
width: 64 bits
clock: 33MHz
capabilities: pm pciexpress msi vga_controller bus_master cap_list rom
configuration: driver=radeon latency=0
resources: irq:50 memory:e0000000-efffffff memory:f7e00000-f7e3ffff ioport:e000(size=256) memory:f7e40000-f7e5ffff
siriusy@siriusy-PC:~$ sudo ubuntu-drivers devices
== /sys/devices/pci0000:00/0000:00:01.0/0000:01:00.0 ==
model : Sapphire Radeon HD 7850 2 GB GDDR5 DVI-I/DVI-D/HDMI/DP
vendor : Advanced Micro Devices, Inc. [AMD/ATI]
modalias : pci:v00001002d00006819sv0000174Bsd0000E221bc03sc00i00
driver : xserver-xorg-video-ati - distro free builtin recommended
driver : fglrx - distro non-free
driver : fglrx-updates - distro non-free