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Quanttek

Member

Registered: 2015-01-10

Posts: 22

weird line on the right edge of the screen with fglrx and KDE Plasma

Hey there,

I am using an AMD Radeon R9 280X with the fglrx driver for my 2-monitor setup: One 1366x768 monitor on the left side, one 1920x1080 monitor on the right side. My current DE is Plasma with KDE 5, but the bug also existed (though not as bad) with Cinnamon.

Now to the problem: On the right edge of the screen is the 2-pixel-width vertical line currently in grey, which even exist in full-screen applications.
On Cinnamon the situation is a little bit different: Here it only appears sometimes, but then it flashes frequently, though full-screen applications cover it.
Interestingly I can hover my mouse pointer over it.
Here are two screenshots: One with the whole line and one showing the above described.

I configured my screens with amdccle and/or the KDE 5 display manager. Here's the generated xorg.conf:

Section "ServerLayout"
	Identifier     "amdcccle Layout"
EndSection

Section "Files"
	FontPath     "/usr/share/fonts/adobe-source-sans-pro/"
	FontPath     "/usr/share/fonts/cyrillic/"
EndSection

Section "Module"
EndSection

Section "ServerFlags"
	Option	    "Xinerama" "off"
	Option	    "RandR" "on"
EndSection

Section "Monitor"
	Identifier   "DFP6"
	Option	    "VendorName" "ATI Proprietary Driver"
	Option	    "ModelName" "Generic Autodetecting Monitor"
	Option	    "DPMS" "true"
	Option	    "Primary" "true"
EndSection

Section "Monitor"
	Identifier   "DFP7"
	Option	    "VendorName" "ATI Proprietary Driver"
	Option	    "ModelName" "Generic Autodetecting Monitor"
	Option	    "DPMS" "true"
	Option	    "LeftOf" "DFP6"
EndSection

Section "Monitor"
	Identifier   "0-DFP6"
	Option	    "VendorName" "ATI Proprietary Driver"
	Option	    "ModelName" "Generic Autodetecting Monitor"
	Option	    "DPMS" "true"
	Option	    "PreferredMode" "1920x1080"
	Option	    "TargetRefresh" "60"
	Option	    "Position" "1366 0"
	Option	    "Rotate" "normal"
	Option	    "Disable" "false"
	Option	    "Primary" "true"
EndSection

Section "Monitor"
	Identifier   "0-DFP7"
	Option	    "VendorName" "ATI Proprietary Driver"
	Option	    "ModelName" "Generic Autodetecting Monitor"
	Option	    "DPMS" "true"
	Option	    "PreferredMode" "1366x768"
	Option	    "TargetRefresh" "60"
	Option	    "Position" "0 312"
	Option	    "Rotate" "normal"
	Option	    "Disable" "false"
EndSection

Section "Device"
	Identifier  "aticonfig-Device[0]-0"
	Driver      "fglrx"
	Option	    "Monitor-DFP6" "0-DFP6"
	Option	    "Monitor-DFP7" "0-DFP7"
	BusID       "PCI:1:0:0"
EndSection

Thanks for any help in advance

Last edited by Quanttek (2015-05-03 12:57:23)

Quanttek

Member

Registered: 2015-01-10

Posts: 22

Re: weird line on the right edge of the screen with fglrx and KDE Plasma

bump

Quanttek

Member

Registered: 2015-01-10

Posts: 22

Re: weird line on the right edge of the screen with fglrx and KDE Plasma

bump

ewaller

Administrator

From: Pasadena, CA

Registered: 2009-07-13

Posts: 20,721

Re: weird line on the right edge of the screen with fglrx and KDE Plasma

Do not bump.  It is against our rules of etiquette

These are active forums.  If no one answers, it is undoubtedly because no one has same problem or knows the solution.  I looked at this thread days ago and had nothing to contribute.  That the cursor can appear in that dead zone killed any theory I had.   I don't have your hardware.  I don't see the problem on my system; apparently no one else does either.

If you want to bring focus to your thread, tell us what you have read and what you have learned during the interim.  Just a straight 'bump' tells us that you are just waiting for us to do your research.

---

Nothing is too wonderful to be true, if it be consistent with the laws of nature -- Michael Faraday
The shortest way to ruin a country is to give power to demagogues.— Dionysius of Halicarnassus
---
How to Ask Questions the Smart Way

Quanttek

Member

Registered: 2015-01-10

Posts: 22

Re: weird line on the right edge of the screen with fglrx and KDE Plasma

Do not bump.  It is against our rules of etiquette
[...]
If you want to bring focus to your thread, tell us what you have read and what you have learned during the interim.  Just a straight 'bump' tells us that you are just waiting for us to do your research.

Oh, I'm sorry. I just vaguely remembered to just bump every 24hrs at max, but that must ahd been a different forum.

I'd like to share any new results, but I don't really have any.

Only thing is that this neither appears on screenshots or in KDE's zoom mode.

Also the color of this line changes with every restart, often not uniform, but more 'distorted'.

ewaller

Administrator

From: Pasadena, CA

Registered: 2009-07-13

Posts: 20,721

Re: weird line on the right edge of the screen with fglrx and KDE Plasma

Also the color of this line changes with every restart, often not uniform, but more 'distorted'.

Now that it interesting    This only happens on the big screen?  Not that it matters (as the full screen display overwrites it), but what type of interface is it?  HDMI, VGA?  What does the display report as its current resolution in the on screen menu?

What effects to you use in KDE?  Although this is mitigated by your having had the problem with Cinnamon

---

Nothing is too wonderful to be true, if it be consistent with the laws of nature -- Michael Faraday
The shortest way to ruin a country is to give power to demagogues.— Dionysius of Halicarnassus
---
How to Ask Questions the Smart Way

Quanttek

Member

Registered: 2015-01-10

Posts: 22

Re: weird line on the right edge of the screen with fglrx and KDE Plasma

Now that it interesting    This only happens on the big screen?

Yes, this only happens on the big screen

Not that it matters (as the full screen display overwrites it), but what type of interface is it?  HDMI, VGA?

DVI

What does the display report as its current resolution in the on screen menu?

It reports 1920x1080 as it's current resolution

As a test I changed the resolution to 1400x1050 in the KDE menu, but the monitor reports it as 1680x1050. Though the bug still persists.

What effects to you use in KDE?  Although this is mitigated by your having had the problem with Cinnamon

I use the standard configuration of effects in KDE. But the bug persists even when I turn off compositing.
There is a small difference in the bug between Cinnamon and KDE: First off the line has a smaller width in Cinnamon and full-screen applications covered it.

Also it isn't an offset per se off the whole X screen, but instead only of the KDE/Cinnamon "workspace".  E.g. windows snap with the line, but behind the flickering you can still see the current window, e.g. when moved to the right.

(Sorry for not answering for so long)

EDIT: Also the flickering gets more extreme the smaller the reosultion was I changed to inbetween http://i.imgur.com/WQ4fkmf.jpg

Last edited by Quanttek (2015-05-02 18:21:23)