我刚刚更新到 16.04。我的系统有 AMD Radeon HD 5450 显卡,我将其与两个 16:9 显示器一起使用。
更新后,即删除 fglrx 后,显示器镜像,宽高比为 4:3,分辨率较低。我怀疑这与使用的驱动程序有关,但我无法更改它。
关于如何进行有什么建议吗?
$ sudo lspci -v
03:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Cedar [Radeon HD 5000/6000/7350/8350 Series] (prog-if 00 [VGA controller])
Subsystem: ASUSTeK Computer Inc. Cedar [Radeon HD 5000/6000/7350/8350 Series]
Flags: bus master, fast devsel, latency 0, IRQ 11
Memory at e0000000 (64-bit, prefetchable) [size=256M]
Memory at fbe20000 (64-bit, non-prefetchable) [size=128K]
I/O ports at e000 [size=256]
Expansion ROM at fbe00000 [disabled] [size=128K]
Capabilities: [50] Power Management version 3
Capabilities: [58] Express Legacy Endpoint, MSI 00
Capabilities: [a0] MSI: Enable- Count=1/1 Maskable- 64bit+
Capabilities: [100] Vendor Specific Information: ID=0001 Rev=1 Len=010 <?>
Capabilities: [150] Advanced Error Reporting
Kernel modules: radeon
其他一些可能有用的信息:
$ sudo lshw -c video
*-display UNCLAIMED
description: VGA compatible controller
product: Cedar [Radeon HD 5000/6000/7350/8350 Series]
vendor: Advanced Micro Devices, Inc. [AMD/ATI]
physical id: 0
bus info: pci@0000:03:00.0
version: 00
width: 64 bits
clock: 33MHz
capabilities: pm pciexpress msi vga_controller bus_master cap_list
configuration: latency=0
resources: memory:e0000000-efffffff memory:fbe20000-fbe3ffff ioport:e000(size=256) memory:fbe00000-fbe1ffff
答案1
nomodeset
解决方案是从 grub 中的内核参数中删除。这样,启用radeon
驱动程序和具有正确分辨率的双显示器设置在启动后立即正确。
不幸的是,radeon
在当前使用双显示器并打开多个窗口等的桌面环境下,驱动程序(和/或 GPU 本身)似乎有点慢。