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Graphics problem on Ubuntu 18.04 - blurred text + screen flickering

Ubuntu 18.04 screen strobingFlickering screen on Ubuntu 18.04kernel 4.18.0.11.12 trouble: Video black screenUbuntu Flickering windowsFickering screen after installing ubuntu 17.10Can't install nvidia drivers on a 2 card laptop for xubuntu 14.04How to install Radeon HD 8670A/8670M/8750M graphic card driver on Ubuntu 16.04?Is there a way to switch between Intel/Radeon graphic driver on Ubuntu 18.04?

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4

1

I installed Ubuntu 18.04 a day ago. It works perfectly but graphics is a problem; I see screen flickering where there are system or JS overlays and blurred text.

What can I do - my graphics are based on intel chip

Running sudo lshw -c display

I get

*-display 
 description: VGA compatible controller
 product: HD Graphics 520
 vendor: Intel Corporation
 physical id: 2
 bus info: pci@0000:00:02.0
 version: 07
 width: 64 bits
 clock: 33MHz
 capabilities: pciexpress msi pm vga_controller bus_master cap_list rom
 configuration: driver=i915 latency=0
 resources: irq:127 memory:b0000000-b0ffffff memory:a0000000-afffffff ioport:3000(size=64) memory:c0000-dffff

Check the terminal output screenshot

graphics intel-graphics 18.04 intel visual-artifacts

share|improve this question

edited May 16 '18 at 13:33

Elias Gikonyo

asked May 16 '18 at 6:57

Elias GikonyoElias Gikonyo

2111 silver badge33 bronze badges

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  I think you'll need to give some more detailed hardware information here. Graphics devices should come up when you run lspci -knn | grep -EA2 'VGA|3D' or sudo lshw -c display. Can you edit your question to add that info?
  
  – Zanna
  May 16 '18 at 7:07
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Thanks @Zanna , I have edited the question to include the extra details
  
  – Elias Gikonyo
  May 16 '18 at 13:36
  

  
  
  
  

add a comment
 | 

4

1

I installed Ubuntu 18.04 a day ago. It works perfectly but graphics is a problem; I see screen flickering where there are system or JS overlays and blurred text.

What can I do - my graphics are based on intel chip

Running sudo lshw -c display

I get

*-display 
 description: VGA compatible controller
 product: HD Graphics 520
 vendor: Intel Corporation
 physical id: 2
 bus info: pci@0000:00:02.0
 version: 07
 width: 64 bits
 clock: 33MHz
 capabilities: pciexpress msi pm vga_controller bus_master cap_list rom
 configuration: driver=i915 latency=0
 resources: irq:127 memory:b0000000-b0ffffff memory:a0000000-afffffff ioport:3000(size=64) memory:c0000-dffff

Check the terminal output screenshot

graphics intel-graphics 18.04 intel visual-artifacts

share|improve this question

edited May 16 '18 at 13:33

Elias Gikonyo

asked May 16 '18 at 6:57

Elias GikonyoElias Gikonyo

2111 silver badge33 bronze badges

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  I think you'll need to give some more detailed hardware information here. Graphics devices should come up when you run lspci -knn | grep -EA2 'VGA|3D' or sudo lshw -c display. Can you edit your question to add that info?
  
  – Zanna
  May 16 '18 at 7:07
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Thanks @Zanna , I have edited the question to include the extra details
  
  – Elias Gikonyo
  May 16 '18 at 13:36
  

  
  
  
  

add a comment
 | 

I installed Ubuntu 18.04 a day ago. It works perfectly but graphics is a problem; I see screen flickering where there are system or JS overlays and blurred text.

What can I do - my graphics are based on intel chip

Running sudo lshw -c display

I get

*-display 
 description: VGA compatible controller
 product: HD Graphics 520
 vendor: Intel Corporation
 physical id: 2
 bus info: pci@0000:00:02.0
 version: 07
 width: 64 bits
 clock: 33MHz
 capabilities: pciexpress msi pm vga_controller bus_master cap_list rom
 configuration: driver=i915 latency=0
 resources: irq:127 memory:b0000000-b0ffffff memory:a0000000-afffffff ioport:3000(size=64) memory:c0000-dffff

Check the terminal output screenshot

graphics intel-graphics 18.04 intel visual-artifacts

share|improve this question

edited May 16 '18 at 13:33

Elias Gikonyo

asked May 16 '18 at 6:57

Elias GikonyoElias Gikonyo

2111 silver badge33 bronze badges

*-display 
 description: VGA compatible controller
 product: HD Graphics 520
 vendor: Intel Corporation
 physical id: 2
 bus info: pci@0000:00:02.0
 version: 07
 width: 64 bits
 clock: 33MHz
 capabilities: pciexpress msi pm vga_controller bus_master cap_list rom
 configuration: driver=i915 latency=0
 resources: irq:127 memory:b0000000-b0ffffff memory:a0000000-afffffff ioport:3000(size=64) memory:c0000-dffff

share|improve this question

edited May 16 '18 at 13:33

Elias Gikonyo

asked May 16 '18 at 6:57

Elias GikonyoElias Gikonyo

2111 silver badge33 bronze badges

share|improve this question

edited May 16 '18 at 13:33

Elias Gikonyo

asked May 16 '18 at 6:57

Elias GikonyoElias Gikonyo

2111 silver badge33 bronze badges

asked May 16 '18 at 6:57

Elias GikonyoElias Gikonyo

2111 silver badge33 bronze badges

asked May 16 '18 at 6:57

Elias GikonyoElias Gikonyo

2111 silver badge33 bronze badges

1 Answer
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1

To get rid of the flicker, I had to REMOVE these two lines from /etc/environment (you probably don't have them, unless you installed gnome-wobbly-windows extension)

CLUTTER_PAINT=disable-clipped-redraws:disable-culling
CLUTTER_VBLANK=True

And I also had to run sudo ubuntu-drivers autoinstall and then reboot

For nVidia cards:
To make the text non-blurry, I just increased the screen resolution via nvidia-settings (the Display dialog did not let me change the resolution)

share|improve this answer

answered Jun 4 '18 at 23:53

JonathanJonathan

1,82833 gold badges1616 silver badges3737 bronze badges

• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  Thanks @Jonathan. This worked on my Dell Precision 5510. Symptoms only appeared in Gnome desktop, not XFCE. I had tough time until I found this info.
  
  – pauljohn32
  Nov 20 '18 at 3:25
  

  
  
  
  

add a comment
 | 

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1

To get rid of the flicker, I had to REMOVE these two lines from /etc/environment (you probably don't have them, unless you installed gnome-wobbly-windows extension)

CLUTTER_PAINT=disable-clipped-redraws:disable-culling
CLUTTER_VBLANK=True

And I also had to run sudo ubuntu-drivers autoinstall and then reboot

For nVidia cards:
To make the text non-blurry, I just increased the screen resolution via nvidia-settings (the Display dialog did not let me change the resolution)

share|improve this answer

answered Jun 4 '18 at 23:53

JonathanJonathan

1,82833 gold badges1616 silver badges3737 bronze badges

• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  Thanks @Jonathan. This worked on my Dell Precision 5510. Symptoms only appeared in Gnome desktop, not XFCE. I had tough time until I found this info.
  
  – pauljohn32
  Nov 20 '18 at 3:25
  

  
  
  
  

add a comment
 | 

1

To get rid of the flicker, I had to REMOVE these two lines from /etc/environment (you probably don't have them, unless you installed gnome-wobbly-windows extension)

CLUTTER_PAINT=disable-clipped-redraws:disable-culling
CLUTTER_VBLANK=True

And I also had to run sudo ubuntu-drivers autoinstall and then reboot

For nVidia cards:
To make the text non-blurry, I just increased the screen resolution via nvidia-settings (the Display dialog did not let me change the resolution)

share|improve this answer

answered Jun 4 '18 at 23:53

JonathanJonathan

1,82833 gold badges1616 silver badges3737 bronze badges

• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  Thanks @Jonathan. This worked on my Dell Precision 5510. Symptoms only appeared in Gnome desktop, not XFCE. I had tough time until I found this info.
  
  – pauljohn32
  Nov 20 '18 at 3:25
  

  
  
  
  

add a comment
 | 

To get rid of the flicker, I had to REMOVE these two lines from /etc/environment (you probably don't have them, unless you installed gnome-wobbly-windows extension)

CLUTTER_PAINT=disable-clipped-redraws:disable-culling
CLUTTER_VBLANK=True

And I also had to run sudo ubuntu-drivers autoinstall and then reboot

For nVidia cards:
To make the text non-blurry, I just increased the screen resolution via nvidia-settings (the Display dialog did not let me change the resolution)

share|improve this answer

answered Jun 4 '18 at 23:53

JonathanJonathan

1,82833 gold badges1616 silver badges3737 bronze badges

CLUTTER_PAINT=disable-clipped-redraws:disable-culling
CLUTTER_VBLANK=True

share|improve this answer

answered Jun 4 '18 at 23:53

JonathanJonathan

1,82833 gold badges1616 silver badges3737 bronze badges

answered Jun 4 '18 at 23:53

JonathanJonathan

1,82833 gold badges1616 silver badges3737 bronze badges

answered Jun 4 '18 at 23:53

JonathanJonathan

1,82833 gold badges1616 silver badges3737 bronze badges