Strange text over building

[P. van Tillo]

Today I was playing. I build a port and a ship. The ship went for scouting and find a place to buold another port.
After the Port was finished, I aso build a wachtpost (see picture). everything okay.
Later on, I did build a jachthut (see picture), and then I went away.
When I came back, I saw that the wachtpost had a strange tekst on it. (see picture).
The text was steady, and did not flicker.

[SirVer (sirver)]

I was still unable to reproduce, but I have a theory of what we see here: it seems to me that the surface cache is deleting/dropping the surface that contains the rendered text without it being recreated properly - the symptoms point to random memory being rendered as images.

As mentioned, I was unable to reproduce. Theoretically, one would need a long running game so that the cache flows over and stuff gets dropped and then simply wait and see and this should turn up. If someone is able to reproduce this in a stable fashion, I would be most interested.

Thanks for reporting again!

[P. van Tillo (pvtillo)]

Hi,

Ubuntu 13.04 64-bits, Widelands bzr6607.

The flickering text is getting worse.
The first time I noticed this, it was only by dismanteling a building, but now I started a new game, and immediately after starting to build, the text got flickering over the buidings that are being build. (see attachment).

[P. van Tillo (pvtillo)]

Hi

Ubuntu 13.04 64-bits, Widelands bzr6629.

I do not know if I have to write this here, but I like to tell you, that the flickering still existed in build bzr 6624, but since build bzr6628 I did not notice any strange text and or flickering.

[Hans Joachim Desserud (hjd)]

>but since build bzr6628 I did not notice any strange text and or flickering.

Thanks for reporting back on the progress of this. I guess it's good news it went away, but on the other hand no one has really done anything actively to get rid of this issue. I'm therefore worried it might lie dormant or has simply become harder to trigger.

I'll set this report to Incomplete which means it will expire in two months if we don't hear anything more. Please keep an eye out for it and let us know if it happens again. :)

[P. van Tillo (pvtillo)]

Ubuntu 13.04 64-bits Widelands bzr6680-201307291018(Release)

Hello, today I noticed that the strange text over buildings is back.

Further what I noticed, is that the strange text comes from another windows on ubuntu where a website is opened.
On that website there are some flash animations. The strange text comes from the flash animations.

I always have that website open in another window. The website is: http://members.ziggo.nl/de.kopere

The text I see over the buildings becomes from the clock on the left side and from the weather animation on the left side.
I don't know if this is helpfull, but i thought I mention this.

As an attachment I sent the savegame.

[SirVer (sirver)]

This indicates invalid memory access from the site of widelands. I guess we have to valgrind our way out here. can someone else repro this? It is strange that only one user is reporting this.

pvtillo, what graphics card are you using? can you run other opengl stuff (glxgears for example, how many frames per second to you get there?).

[P. van Tillo (pvtillo)]

Hi, my graphics card is:

NVIDIA Corporation GT216M [Geforce GT330M]

For glxgears see attachment.

[P. van Tillo (pvtillo)]

Hello,

I installed a new graphics driver on Ubuntu. After that, I started Widelands, and a number of other programs.
After 1 week of playing Widelands, and also checking email, browsing on the internet and some other things, everything still works fine.

So there is no strange text anymore. Sorry for the inconvenience. So this is NOT a bug in Widelands. It had to do with the
graphics driver.

[Hans Joachim Desserud (hjd)]

Ok, if this is caused by the graphic driver I think we can close this issue.

I see you posted your graphics card above, could you please include the name and version of the drivers as well (old as well as the new one), in case others run into the same issue?

Oh, and please keep us posted if it reappears in the future. :)

[P. van Tillo (pvtillo)]

Hi,

My previous driver was the X.Org X server driver.

I changed to the Nvidia driver as you can see in the screenshot attached.

[Hans Joachim Desserud (hjd)]

Yesterday I was spectating one of the tournament games, and after I quit there were some weird glitches in parts of the metaserver lobby ui. This may be a completely separate issue, and should be reported as such, but every part of it kept reminding me about this one. It seems somewhat consistent with the theory that long-running games exhaust the cache and start reading parts of memory it shouldn't.

This happened while running r6785 on Ubuntu 13.04 (physical machine, not vm this time round). I have not been able to reproduce the issue later.

[Hans Joachim Desserud (hjd)]

The issue in comment #12 might have been related to bug 1236008 (?)

[Launchpad Janitor (janitor)]

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

[SirVer (sirver)]

I set this to fix committed since the OP problem was related to driver issues and 13 was quite definitively bug 1236008.

[SirVer (sirver)]

Released in build-18 rc1.