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Ubuntu 18.04.2 LTS 闪烁

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Ubuntu 18.04.2 LTS 闪烁

我在 ubuntu 18.04.2 LST 上运行时遇到屏幕闪烁的问题。离开时屏幕闪烁，只有执行某些操作、书写或移动光标时屏幕才会停止。这是什么问题？

英特尔® 酷睿™ i5-5200U CPU @ 2.20GHz × 4
GeForce 940M/PCIe/SSE2

~$ mokutil --sb-state  
SecureBoot disabled

~$ ls /sys/firmware/efi/  
config_table     fw_platform_size     runtime         systab  
efivars          fw_vendor            runtime-map     vars

~$ sudo lshw -c video
[sudo] password for mejdej: 
  *-display                 
       description: VGA compatible controller
       product: HD Graphics 5500
       vendor: Intel Corporation
       physical id: 2
       bus info: pci@0000:00:02.0
       version: 09
       width: 64 bits
       clock: 33MHz
       capabilities: msi pm vga_controller bus_master cap_list rom
       configuration: driver=i915 latency=0
       resources: irq:50 memory:f5000000-f5ffffff memory:d0000000-dfffffff ioport:f000(size=64) memory:c0000-dffff
  *-display
       description: 3D controller
       product: GM108M [GeForce 940M]
       vendor: NVIDIA Corporation
       physical id: 0
       bus info: pci@0000:04:00.0
       version: a2
       width: 64 bits
       clock: 33MHz
       capabilities: pm msi pciexpress bus_master cap_list rom
       configuration: driver=nouveau latency=0
       resources: irq:49 memory:f6000000-f6ffffff memory:e0000000-efffffff memory:f0000000-f1ffffff ioport:d000(size=128) memory:f7000000-f707ffff
~$ lspci -k | grep -A 2 -i "VGA"
00:02.0 VGA compatible controller: Intel Corporation HD Graphics 5500 (rev 09)
    Subsystem: ASUSTeK Computer Inc. HD Graphics 5500
    Kernel driver in use: i915

也尝试更新 nVidia 控制器但失败了。

~$ sudo apt-get install --yes nvidia-current
[sudo] password for mejdej: 
Reading package lists... Done
Building dependency tree       
Reading state information... Done
Package nvidia-current is not available, but is referred to by another package.
This may mean that the package is missing, has been obsoleted, or
is only available from another source

E: Package 'nvidia-current' has no installation candidate

更新专用于我的显卡的 nvidia controler 418 后：

~$ sudo lshw -c video
[sudo] password for mejdej: 
  *-display                 
       description: VGA compatible controller
       product: HD Graphics 5500
       vendor: Intel Corporation
       physical id: 2
       bus info: pci@0000:00:02.0
       version: 09
       width: 64 bits
       clock: 33MHz
       capabilities: msi pm vga_controller bus_master cap_list rom
       configuration: driver=i915 latency=0
       resources: irq:49 memory:f5000000-f5ffffff memory:d0000000-dfffffff ioport:f000(size=64) memory:c0000-dffff
  *-display
       description: 3D controller
       product: GM108M [GeForce 940M]
       vendor: NVIDIA Corporation
       physical id: 0
       bus info: pci@0000:04:00.0
       version: a2
       width: 64 bits
       clock: 33MHz
       capabilities: pm msi pciexpress bus_master cap_list rom
       configuration: driver=nvidia latency=0
       resources: irq:51 memory:f6000000-f6ffffff memory:e0000000-efffffff memory:f0000000-f1ffffff ioport:d000(size=128) memory:f7000000-f707ffff


~$ lsmod | grep nvidia
nvidia_uvm            798720  0
nvidia_drm             45056  9
nvidia_modeset       1085440  6 nvidia_drm
nvidia              17600512  480 nvidia_uvm,nvidia_modeset
drm_kms_helper        167936  2 nvidia_drm,i915
ipmi_msghandler        53248  2 ipmi_devintf,nvidia
drm                   401408  13 drm_kms_helper,nvidia_drm,i91

=======

  • 更换其他 GUI（在我的情况下从 gnome 到 cinnamon）没有帮助

  • 更新内核至最新版本 4.19 也无济于事

答案1

还有许多人面临同样的问题，但有些人的情况更严重，有些人的情况更轻，但不用担心，有很多解决方案。我想问你 如果您正在使用最新的上游内核？

测试最新的上游内核？请参阅 https://wiki.ubuntu.com/KernelMainlineBuilds

请测试最新的v4.19内核[0]。

如果此错误在主线内核中已修复，请添加以下标签

‘内核固定上游’。

若主线内核没有修复此bug，请添加标签：

‘内核错误存在上游’。

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