带有英特尔集成显卡的 Ubuntu 18.04 中的图形失真

我有一个带有 Intel 集成 (Ivybridge) 显卡的 Ubuntu 18.04 桌面。当我启动系统时，登录屏幕和默认的 Ubuntu 会话显示严重扭曲的图形和颜色，使其几乎无法使用。图片附在下面。

Ubuntu 会话的图像

但是，我在这个系统中也安装了 gnome flashback (metacity) 和 xfce4 桌面，当我登录到这些会话时，除了少数应用程序（google-chrome、skype 等，我还没有检查所有），显然没有如此严重的失真应用程序虽然）。到目前为止，鹦鹉螺和其他应用程序在这些桌面上运行平稳，没有任何故障。有没有办法解决 Ubuntu 会话和登录屏幕的问题？我尝试了以下链接中提到的一些解决方案，但没有成功 -

1. 如何解决 Ubuntu 18.04 显示问题（滞后、闪烁）？

系统信息：

$uname -a
Linux scorpio 5.3.0-62-generic #56~18.04.1-Ubuntu SMP Wed Jun 24 16:17:03 UTC 2020 x86_64 x86_64 x86_64 GNU/Linux

$lsb_release -a
LSB Version:    core-9.20170808ubuntu1-noarch:printing-9.20170808ubuntu1-noarch:security-9.20170808ubuntu1-noarch
Distributor ID: Ubuntu
Description:    Ubuntu 18.04.4 LTS
Release:        18.04
Codename:       bionic

这是glxinfo -B的输出

name of display: :1.0
display: :1  screen: 0
direct rendering: Yes
Extended renderer info (GLX_MESA_query_renderer):
    Vendor: Intel Open Source Technology Center (0x8086)
    Device: Mesa DRI Intel(R) Ivybridge Desktop  (0x152)
    Version: 19.2.8
    Accelerated: yes
    Video memory: 1536MB
    Unified memory: yes
    Preferred profile: core (0x1)
    Max core profile version: 4.2
    Max compat profile version: 3.0
    Max GLES1 profile version: 1.1
    Max GLES[23] profile version: 3.0
OpenGL vendor string: Intel Open Source Technology Center
OpenGL renderer string: Mesa DRI Intel(R) Ivybridge Desktop
OpenGL core profile version string: 4.2 (Core Profile) Mesa 19.2.8
OpenGL core profile shading language version string: 4.20
OpenGL core profile context flags: (none)
OpenGL core profile profile mask: core profile

OpenGL version string: 3.0 Mesa 19.2.8
OpenGL shading language version string: 1.30
OpenGL context flags: (none)

OpenGL ES profile version string: OpenGL ES 3.0 Mesa 19.2.8
OpenGL ES profile shading language version string: OpenGL ES GLSL ES 3.00

和inxi -G的输出

Graphics:  Card: Intel Xeon E3-1200 v2/3rd Gen Core processor Graphics Controller
           Display Server: x11 (X.Org 1.20.8 ) drivers: fbdev (unloaded: modesetting,vesa)
           Resolution: [email protected]
           OpenGL: renderer: Mesa DRI Intel Ivybridge Desktop version: 4.2 Mesa 19.2.8

还有lshw -c video给出

  *-display
       description: VGA compatible controller
       product: Xeon E3-1200 v2/3rd Gen Core processor Graphics Controller
       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:28 memory:f7800000-f7bfffff memory:e0000000-efffffff ioport:f000(size=64) memory:c0000-dffff

cat /var/log/gpu-manager.log的输出

log_file: /var/log/gpu-manager.log
last_boot_file: /var/lib/ubuntu-drivers-common/last_gfx_boot
new_boot_file: /var/lib/ubuntu-drivers-common/last_gfx_boot
can't access /run/u-d-c-nvidia-was-loaded file
can't access /opt/amdgpu-pro/bin/amdgpu-pro-px
Looking for nvidia modules in /lib/modules/5.3.0-62-generic/updates/dkms
Looking for amdgpu modules in /lib/modules/5.3.0-62-generic/updates/dkms
Is nvidia loaded? no
Was nvidia unloaded? no
Is nvidia blacklisted? no
Is intel loaded? yes
Is radeon loaded? no
Is radeon blacklisted? no
Is amdgpu loaded? no
Is amdgpu blacklisted? no
Is amdgpu versioned? no
Is amdgpu pro stack? no
Is nouveau loaded? no
Is nouveau blacklisted? no
Is nvidia kernel module available? no
Is amdgpu kernel module available? no
Vendor/Device Id: 8086:152
BusID "PCI:0@0:2:0"
Is boot vga? yes
Skipping "/dev/dri/card0", driven by "i915"
Skipping "/dev/dri/card0", driven by "i915"
Skipping "/dev/dri/card0", driven by "i915"
Found "/dev/dri/card0", driven by "i915"
output 0:
        card0-VGA-1
Number of connected outputs for /dev/dri/card0: 1
Does it require offloading? yes
last cards number = 1
Has amd? no
Has intel? yes
Has nvidia? no
How many cards? 1
Has the system changed? No
Single card detected
Nothing to do

我对这个论坛很陌生。如果我能得到任何帮助来解决这个困扰我很长时间的问题，我将不胜感激。

非常感谢。