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Ubuntu 14.04 LTS 亮度问题

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Ubuntu 14.04 LTS 亮度问题

昨天我下载了 Ubuntu 并将其安装在我的笔记本电脑（Sony Vaio PCG-71811M）上，并安装了 Windows 8.1 双启动。我真的很喜欢 Ubuntu，我不想删除 Ubuntu 并重新启用 Windows。但我删除了它，因为我想修复它的亮度问题（低屏幕模式）。

一些输出：

ls /sys/class/backlight/

它只是说

acpi_video0.

不像 intel_backlight 或类似的东西。

个人电脑：

  • 英特尔酷睿 i5-2450M 2.50 GHz
  • 4 GB 内存
  • GeForce 410M- 在 UBUNTU 中：GF119M

还有一些代码：

~$ lspci | egrep "VGA|3D|Display"

01:00.0 VGA compatible controller: NVIDIA Corporation GF119M [GeForce 410M] (rev a1)

~$ glxinfo | grep render

direct rendering: Yes
OpenGL renderer string: GeForce 410M/PCIe/SSE2
    GL_NVX_conditional_render, GL_NVX_gpu_memory_info, 
    GL_NV_conditional_render, GL_NV_copy_depth_to_color, GL_NV_copy_image, 
    GL_NV_parameter_buffer_object2, GL_NV_path_rendering, 
    GL_NVX_conditional_render, GL_NVX_gpu_memory_info, 
    GL_NV_conditional_render, GL_NV_copy_depth_to_color, GL_NV_copy_image, 
    GL_NV_parameter_buffer_object2, GL_NV_path_rendering, 

~$ lspci


00:00.0 Host bridge: Intel Corporation 2nd Generation Core Processor Family DRAM Controller (rev 09)
00:01.0 PCI bridge: Intel Corporation Xeon E3-1200/2nd Generation Core Processor Family PCI Express Root Port (rev 09)
00:16.0 Communication controller: Intel Corporation 6 Series/C200 Series Chipset Family MEI Controller #1 (rev 04)
00:1a.0 USB controller: Intel Corporation 6 Series/C200 Series Chipset Family USB Enhanced Host Controller #2 (rev 04)
00:1b.0 Audio device: Intel Corporation 6 Series/C200 Series Chipset Family High Definition Audio Controller (rev 04)
00:1c.0 PCI bridge: Intel Corporation 6 Series/C200 Series Chipset Family PCI Express Root Port 1 (rev b4)
00:1c.3 PCI bridge: Intel Corporation 6 Series/C200 Series Chipset Family PCI Express Root Port 4 (rev b4)
00:1c.5 PCI bridge: Intel Corporation 6 Series/C200 Series Chipset Family PCI Express Root Port 6 (rev b4)
00:1d.0 USB controller: Intel Corporation 6 Series/C200 Series Chipset Family USB Enhanced Host Controller #1 (rev 04)
00:1f.0 ISA bridge: Intel Corporation HM65 Express Chipset Family LPC Controller (rev 04)
00:1f.2 SATA controller: Intel Corporation 6 Series/C200 Series Chipset Family 6 port SATA AHCI Controller (rev 04)
00:1f.3 SMBus: Intel Corporation 6 Series/C200 Series Chipset Family SMBus Controller (rev 04)
01:00.0 VGA compatible controller: NVIDIA Corporation GF119M [GeForce 410M] (rev a1)
01:00.1 Audio device: NVIDIA Corporation GF119 HDMI Audio Controller (rev a1)
07:00.0 Network controller: Qualcomm Atheros AR9285 Wireless Network Adapter (PCI-Express) (rev 01)
0d:00.0 Unassigned class [ff00]: Realtek Semiconductor Co., Ltd. RTS5209 PCI Express Card Reader (rev 01)
13:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller (rev 06)

~$ xrandr

Screen 0: minimum 8 x 8, current 1366 x 768, maximum 16384 x 16384
VGA-0 disconnected (normal left inverted right x axis y axis)
LVDS-0 connected primary 1366x768+0+0 (normal left inverted right x axis y axis) 344mm x 194mm
   1366x768       60.0*+
HDMI-0 disconnected (normal left inverted right x axis y axis)

答案1

不能 100% 确定这是否能解决问题，但我正在寻找针对旧版本 Ubuntu 的解决方法，因此我相信这些修复已被纳入 xorg-edgers 中。

支持的显卡（使用 346.16 驱动程序）GeForce 410M

346 可能已经脱离测试阶段，但截至 12 月，它仍处于测试阶段。如果它仍处于测试阶段，而您想使用最新的稳定版本，请将 last 命令替换为 343 版本命令。

添加 xorg-edgers ppa（终端命令）

sudo add-apt-repository ppa:xorg-edgers/ppa
sudo apt-get update
sudo apt-get install nvidia-346 nvidia-settings

再次，不确定 346 是否仍在测试中。如果你看了并且对测试版不满意，最新的稳定版将是

sudo apt-get install nvidia-343 nvidia-settings

如果你想删除它们

 sudo apt-get remove nvidia*
 sudo add-apt-repository -r ppa:xorg-edgers/ppa

删除 xorg 配置：

 sudo rm /etc/X11/xorg.conf

重新安装 GL 的 Mesa 包：

 sudo apt-get --reinstall install libgl1-mesa-glx

然后重新启动。如果您愿意的话，您只需返回 311。

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