Screen contamination of black areas, (Solved)

[Almost-retired]

Greetings;

For those of us suffering from terminal screens that use a black background, and are seeing residual data from web page videos showing through black areas on other workspaces, I found it with some help from the Xorg mailing list.

Add this to the "Device" section of your /etc/X11/xorg.conf file

Option "NoFlip"  "True"

and reboot, problem gone.

Cheers, Gene

[wedgetail]

Thanks for the tip, I hope I will remember when I need it.   

[wedgetail]

I did a recent update, 27 April and don't think i noticed until today, the artifacts you described as well as my characters in general are missing noticeable number of pixels when using Forum.

I did remember this thread and have just added the option under devices.  Well I have re-booted and the problem is still there.  I will leave it for the time being and may roll back my system later as the foont is smearing or something.

Edit:
Ooops, found another update and since it looked like updaing something graphics I updated and re-booted, and now I can not repeat the the video intrusion in the konsole window. Most interesting and welcome too.

Do you really have and etc/X110/.... if not can you be persuaded to modify so a poor beginner like me don't start thinking he is missing out on some goodies    

[Bald Brick]

I did a recent update, 27 April and don't think i noticed until today, the artifacts you described as well as my characters in general are missing noticeable number of pixels when using Forum.

I did remember this thread and have just added the option under devices.  Well I have re-booted and the problem is still there.  I will leave it for the time being and may roll back my system later as the foont is smearing or something.

Edit:
Ooops, found another update and since it looked like updaing something graphics I updated and re-booted, and now I can not repeat the the video intrusion in the konsole window. Most interesting and welcome too.

Do you really have and etc/X110/.... if not can you persuaded to modify so a poor beginner like me don't start thinking he is missing out on some goodies    

Gene most probably meant /etc/X11/xorg.conf. I get the same artifacts, but only after every sixth or seventh reboot. I've added the line Gene recommended but I have to boot quite a number of times before I know if it makes any difference.

[wedgetail]

Bald Brick
Aaah, not so good news, while waiting on a program to finish I speculated a bit upon the problem, while it disappeared after the very latest update I did I wondered if this perhaps was just a fluke.

I will keep a watch and test in the coming days and see. 

Do your fonts seem to be fuzzy or blurred at random when using Opera and on Forum? Perhaps I a have a secondary problem but I noticed it seemed to co-incide with the video break through.

[Bald Brick]

Bald Brick
Aaah, not so good news, while waiting on a program to finish I speculated a bit upon the problem, while it disappeared after the very latest update I did I wondered if this perhaps was just a fluke.

I will keep a watch and test in the coming days and see.  

Do your fonts seem to be fuzzy or blurred at random when using Opera and on Forum? Perhaps I a have a secondary problem but I noticed it seemed to co-incide with the video break through.

Yes, they do, or actually the fonts on some lines of text almost appear semi-transparent -- but only after those reboots when I also see residual data from videos. Let's hope that Gene's fix works for you and me too.


My video card is an Nvidia G96 [GeForce GT 120]. Do you also have an Nvidia card?

[wedgetail]

Bald Brick
I have a GeForce 9600GT probably similar to yours. Your description of font problem is perfect. Only some lines, and if the text is moved it may disappear.

For a number of months I had not noticed until this week. Long ago when I had the problem I found there was a difference between KDE and MiniMe (I think, could have been Gnome, LXDE, Phoenix or even ZenMini) I might just run those systems up to check what they do now.

[Rudge]

Go to "Configure Your Computer/Hardware/Browse and configure hardware/Videocard/(nvidia card)/ At the bottom of the page is "Run Config Tool"

Click on "Options and toggle "Enable Render Accelerator" on or off. If it is on turn it off, if it is off turn it on.

Reboot. 

[Bald Brick]

Go to "Configure Your Computer/Hardware/Browse and configure hardware/Videocard/(nvidia card)/ At the bottom of the page is "Run Config Tool"

Click on "Options and toggle "Enable Render Accelerator" on or off. If it is on turn it off, if it is off turn it on.

Reboot. 

Thanks, Rudge,

I'll try that if Gene's fix doesn't work. (So far I've booted three times without the artifacts.)

[Rudge]

Thanks, Rudge,

I'll try that if Gene's fix doesn't work. (So far I've booted three times without the artifacts.)

My Geforce 8400 does this (text missing pixels randomly thing) every time there is a driver update. This trick works for me consistently.   

Good luck. 

[Georgetoon]

I usually get these artifacts due to some bug causing flash to crash.  But, since updating, it hasn't crashed for quite some time now.

However, the fix I employed was o simply to do a Ctrl Alt F1 and then Ctrl Alt F8.

I found this tip on these very forums. My apologies as I cannot remember who posted this quick fix.  I give him all the credit.

[Bald Brick]

I usually get these artifacts due to some bug causing flash to crash.  But, since updating, it hasn't crashed for quite some time now.

However, the fix I employed was o simply to do a Ctrl Alt F1 and then Ctrl Alt F8.

I found this tip on these very forums. My apologies as I cannot remember who posted this quick fix.  I give him all the credit.

At first Gene's fix seemed to work but this morning the artifacts were back. So I tried your recipe: switching to a tty and back. It did work, but I doubt that one can really call it a fix. Like Rudge's solution it's more of a trick.

I'll try downgrading flash next.

[wedgetail]

Bald Brick
Have you installed anything since fix?
My system appears to still hang in there after a number of re-starts, fingers crossed. 

[Bald Brick]

Bald Brick
Have you installed anything since fix?

No, I haven't, if you don't count normal updates.

My system appears to still hang in there after a number of re-starts, fingers crossed. 

The fix appeared to work on my system too, and I watched a lot of flash videos and rebooted quite a number of times.