我需要“视频卡”的图形驱动程序才能从显示端口输出音频。问题是我不知道我到底需要什么驱动程序。我尝试从 amd 网站安装我的卡的桌面版图形驱动程序，这很有效，但出于某种原因，它将我的 CPU 限制为 4 个内核中的 1 个。
规格：4 GB 的 RAM AMD CPU（抱歉，不确定具体型号）Ubuntu 12.04 32 位这台电脑很小，安装在三星触摸屏的背面
lspci -vk | egrep -iA13 "vga|audio"下面是包含显卡信息的输出
lspctemp@temp-Aspire-V5-431P:~$ lspci -vk | egrep -iA13 "vga|audio"
00:01.0 VGA compatible controller: Advanced Micro Devices [AMD] nee ATI BeaverCreek [Mobility Radeon HD 6620G] (prog-if 00 [VGA controller])
Subsystem: Advanced Micro Devices [AMD] nee ATI BeaverCreek [Mobility Radeon HD 6620G]
Flags: bus master, fast devsel, latency 0, IRQ 53
Memory at e0000000 (32-bit, prefetchable) [size=256M]
I/O ports at 3000 [size=256]
Memory at f0a00000 (32-bit, non-prefetchable) [size=256K]
Expansion ROM at <unassigned> [disabled]
Capabilities: <access denied>
Kernel driver in use: radeon
Kernel modules: radeon
00:01.1 Audio device: Advanced Micro Devices [AMD] nee ATI BeaverCreek HDMI Audio [Radeon HD 6500D and 6400G-6600G series]
Subsystem: Advanced Micro Devices [AMD] nee ATI BeaverCreek HDMI Audio [Radeon HD 6500D and 6400G-6600G series]
Flags: bus master, fast devsel, latency 0, IRQ 54
Memory at f0a44000 (32-bit, non-prefetchable) [size=16K]
Capabilities: <access denied>
Kernel driver in use: snd_hda_intel
Kernel modules: snd-hda-intel
00:10.0 USB controller: Advanced Micro Devices [AMD] Hudson USB XHCI Controller (rev 03) (prog-if 30 [XHCI])
Subsystem: Advanced Micro Devices [AMD] Hudson USB XHCI Controller
Flags: bus master, fast devsel, latency 0, IRQ 18
Memory at f0a48000 (64-bit, non-prefetchable) [size=8K]
Capabilities: <access denied>
Kernel driver in use: xhci_hcd
--
00:14.2 Audio device: Advanced Micro Devices [AMD] Hudson Azalia Controller (rev 01)
Subsystem: Advanced Micro Devices [AMD] Hudson Azalia Controller
Flags: slow devsel, IRQ 16
Memory at f0a40000 (64-bit, non-prefetchable) [size=16K]
Capabilities: <access denied>
Kernel modules: snd-hda-intel
00:14.3 ISA bridge: Advanced Micro Devices [AMD] Hudson LPC Bridge (rev 11)
Subsystem: Advanced Micro Devices [AMD] Hudson LPC Bridge
Flags: bus master, 66MHz, medium devsel, latency 0
00:14.4 PCI bridge: Advanced Micro Devices [AMD] Hudson PCI Bridge (rev 40) (prog-if 01 [Subtractive decode])
Flags: bus master, 66MHz, medium devsel, latency 64
Bus: primary=00, secondary=01, subordinate=01, sec-latency=64
答案1
我在 Ubuntu 14.04 上遇到了类似的问题，为了解决这个问题，我需要找到并安装新版本的 Ubuntu 内核。