white line next to the Unity launcher after update 3-25-2012

Bug #964756 reported by dum on 2012-03-25
16
This bug affects 3 people
Affects Status Importance Assigned to Milestone
Unity
Expired
Undecided
Unassigned
unity (Ubuntu)
Undecided
Unassigned

Bug Description

After todays update to unity 5.8 (3-25-2012) I noticed a white line from top to bottom of the Unity launcher.
On applications like Firefox, Thunderbird and Chromium there is a white line visible on the top left of the program where the skin is black.
I also noticed that The yellow glow of Compiz when dragging a window to the left is one pixel more to the right than it should be.

I add a screenshot:
https://lh3.googleusercontent.com/-O3cWzRybMIo/T298D2xUBLI/AAAAAAAACbs/cQ7RmZC6gHo/s1152/Screenshot%2520from%25202012-03-25%252022%253A02%253A27.png

On a dark website you can see the white line from top to bottom:

https://lh3.googleusercontent.com/-QsYqsM3aUNc/T3AvNHkOCMI/AAAAAAAACb8/NY6QxcgjkkI/s800/Screenshot%2520from%25202012-03-26%252010%253A55%253A56.png

dum (dummyxl) on 2012-03-25
description: updated
summary: - white line next to the dock after update 3-25-2012
+ white line next to the launcher after update 3-25-2012
summary: - white line next to the launcher after update 3-25-2012
+ white line next to the Unity launcher after update 3-25-2012
Robert Roth (evfool) on 2012-03-25
affects: unity-greeter (Ubuntu) → unity (Ubuntu)
dum (dummyxl) on 2012-03-25
description: updated
description: updated
dum (dummyxl) on 2012-03-25
description: updated
dum (dummyxl) on 2012-03-26
description: updated
description: updated
Daniel van Vugt (vanvugt) wrote :

I get this too when bug 963093 occurs.

Thank you for taking the time to report this bug and helping to make Ubuntu better. This particular bug has already been reported and is a duplicate of bug 963093, so it is being marked as such. Please look at the other bug report to see if there is any missing information that you can provide, or to see if there is a workaround for the bug. Additionally, any further discussion regarding the bug should occur in the other report. Feel free to continue to report any other bugs you may find.

dum (dummyxl) wrote :

I think it is not a complete duplicate of bug 963093, I do not have Flickering and corruption on Unity UI elements.
Only a white line from top to bottom. (and no animation on move hover, someone mention that in the comment of the other bug but I'm not sure of that is a bug) I did a unity --reset and the line is still there.

Maybe it's related but I'm not sure.

dum (dummyxl) wrote :

ps. the white line will not appear when set on auto hide.

dum (dummyxl) wrote :

I did a reinstall of Ubuntu 12.04 and the white line was no longer there.

But after using compiz setting the white line is back.

I did change:
Backlight mode: backlight toggle,
Panel Opacity to 0.5300
Launcher Opacity to 0,8007
Panel Opacity for maximised windows toggle to on.

I don't know what settings did the white line to appear again, but changing the settings back to default don't work.

Am i the only one that have this problem??

Daniel van Vugt (vanvugt) wrote :

The white line is probably the unity rendering issue with overdraw and incorrect damage. It causes a couple of different bugs but most people don't see any of them.

I have a special branch of compiz which exposes all the unity rendering bugs (and in other plugins), however it is not in any official ubuntu release yet. Obviously, because it triggers all the plugin's bugs :)

dum (dummyxl) wrote :

My nohow on this matter is not that great so...

Can i do anything, to fix/repair Unity?
Or is it a real bug that someone have to fix.

Rankovic (d-rankovic) wrote :

I see this exact same thing in Ubuntu 14.04, with no other rendering or otherwise problems. Is there anything I can do to fix it? It's really an eyesore.

Launchpad Janitor (janitor) wrote :

Status changed to 'Confirmed' because the bug affects multiple users.

Changed in unity (Ubuntu):
status: New → Confirmed
Andrea Azzarone (azzar1) wrote :

Can you still see that line?

Changed in unity:
status: New → Incomplete
Changed in unity (Ubuntu):
status: Confirmed → Incomplete
dum (dummyxl) wrote :

No, i was already forgotten about this bug.

To (to-m) wrote :

The line is still there for me on Ubuntu 14.04. However, a similar (possibly duplicate) bug report was set to "Won't fix" because apparently the white line is a design feature: https://bugs.launchpad.net/unity/+bug/1373118

The rationale for the inclusion of the line eludes me however.

Launchpad Janitor (janitor) wrote :

[Expired for Unity because there has been no activity for 60 days.]

Changed in unity:
status: Incomplete → Expired
Launchpad Janitor (janitor) wrote :

[Expired for unity (Ubuntu) because there has been no activity for 60 days.]

Changed in unity (Ubuntu):
status: Incomplete → Expired
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