Mint 12 - Intel 945GM - Strange Corruption

[chris32]

Hello,

I have Dell Inspiron 6400 with Intel 945GM:

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chris@lappy ~ $ lspci | grep VGA
00:02.0 VGA compatible controller: Intel Corporation Mobile 945GM/GMS, 943/940GML Express Integrated Graphics Controller (rev 03)
chris@lappy ~ $


Strangely, I'm getting what I can only describe as a video triangulation / tearing type issue as can be seen in attached screenshot:

Screenshot.png (250.55 KiB) Viewed 2614 times

To get this I simply have float mouse pointer over firefox bookmark on bookmark toolbar. However it is not consistent, so wont do it every time. Move mouse pointer away, i.e. to top of screen and all is good again. The corruption disappears leaving situation normal. What's even weirder is that this only appears to happen when I'm browsing certain websites.

android.modaco.com is one, gmail is another. Mint forums seem to be OK so far. However issue is inconsistent. Cannot always get issue to appear.

Fresh install of Mint 12 (was running Mint 11 previously with zero issues) and all updates installed.

Wondering if someone more knowing than I can cast eye over screenshot? Perhaps recognise what's going on here. (99.9% sure that this is not a hardware issue as once things settle down all is fine)

Have tried to search, but at a loss how to describe this issue!

-Chris

[mank_in]

I see this problem on intel VGA with some LCD monitor in Gnome shell. You can see posts ( not solved) :
Linux Mint 12 Desktop problem
Artifacts na installatie Mint 12

Maybe you can try a solution on that post. I read on other forum sometime this is fix for the problem :

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gksu gedit /etc/environment

add line:

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CLUTTER_PAINT=disable-clipped-redraws:disable-culling

Save and restart

[chris32]

Nice one thanks!

I have added the setting as suggested, rebooted and for the moment all is well. I have not seen any corruption since the reboot.

For the record, the output of the inxi -Gx command on my laptop (as discussed on one of the other threads) looks like this:

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chris@lappy ~ $ inxi -Gx
Graphics:  Card: Intel Mobile 945GM/GMS 943/940GML Express Integrated Graphics Controller bus-ID: 00:02.0
           X.Org 1.10.4 drivers intel unloaded: fbdev,vesa Resolution 1280x800@60.0hz
           GLX Renderer Mesa DRI Intel 945GM x86/MMX/SSE2 GLX Version 1.4 Mesa 7.11 Direct Rendering Yes
chris@lappy ~ $

Will give it a couple of days before I mark this thread as [SOLVED]

Thanks again!

- Chris

[Steve H]

I've been having the same problem with the same GPU. I'll try that and see how it goes.

Thanks

[EDIT] That hasn't worked for me. I've noticed it happens when there are multiple windows open, especially when Chrome is running.

[Steve H]

After a bit of reading around I found the following and it seems to have fixed it (along with making sure the GPU isn't overheating by keeping all the vents clear):

sudo dpkg-reconfigure xserver-xorg
reboot.

So far so good, no weird aspects in over 24 hours. I'm guessing that the install CD/DVD process doesn't handle the graphic driver install very well.

[fpeelo]

Graphics: Card: Intel Mobile 945GM/GMS 943/940GML Express Integrated Graphics Controller bus-ID: 00:02.0
X.Org 1.10.4 drivers intel unloaded: fbdev,vesa Resolution 1280x800@60.0hz

and later

sudo dpkg-reconfigure xserver-xorg
reboot.

"intel unloaded" and "vesa" -- are you able to run compiz on this? And did the reconfigure change this?

Just curious, whether there is an intel driver that gives problems, or your card is struggling with the vesa driver.

Frank

[mank_in]

This problem only on some LCD monitor. I am using 945G with CRT monitor , and it work fine .
If problem exist , maybe you can update intel driver with : ppa:oibaf/graphics-drivers or ppa:glasen/intel-driver
i am use ppa:oibaf/graphics-drivers repository .

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Card: Intel 82945G/GZ Integrated Graphics Controller bus-ID: 00:02.0
           X.Org 1.10.4 drivers intel unloaded: fbdev,vesa Resolution 1024x768@85.0hz
           GLX Renderer Mesa DRI Intel 945G x86/MMX/SSE2 GLX Version 1.4 Mesa 8.0-devel (git-c565ff6 oneiric-oibaf-ppa) Direct Rendering Yes


drivers intel unloaded: fbdev,vesa means :
driver intel in use , fbdev and vesa driver available but not in use.

[Steve H]

This problem only on some LCD monitor. I am using 945G with CRT monitor , and it work fine .
If problem exist , maybe you can update intel driver with : ppa:oibaf/graphics-drivers or ppa:glasen/intel-driver
i am use ppa:oibaf/graphics-drivers repository .

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Card: Intel 82945G/GZ Integrated Graphics Controller bus-ID: 00:02.0
           X.Org 1.10.4 drivers intel unloaded: fbdev,vesa Resolution 1024x768@85.0hz
           GLX Renderer Mesa DRI Intel 945G x86/MMX/SSE2 GLX Version 1.4 Mesa 8.0-devel (git-c565ff6 oneiric-oibaf-ppa) Direct Rendering Yes


drivers intel unloaded: fbdev,vesa means :
driver intel in use , fbdev and vesa driver available but not in use.

I think I spoke too soon. The aspects have returned and sometimes make it impossible to use the screen, only minimizing Chrome seems to do the trick.

OK, so I'll try the optimised drivers from ppa:oibaf/graphics-drivers and I'll report back tomorrow after I've tested it all for a bit.

However, I'm starting to suspect that this may be a HW heat issue, but hard to tell without a readout.

[fpeelo]

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Card: Intel 82945G/GZ Integrated Graphics Controller bus-ID: 00:02.0
           X.Org 1.10.4 drivers intel unloaded: fbdev,vesa Resolution 1024x768@85.0hz
           GLX Renderer Mesa DRI Intel 945G x86/MMX/SSE2 GLX Version 1.4 Mesa 8.0-devel (git-c565ff6 oneiric-oibaf-ppa) Direct Rendering Yes


drivers intel unloaded: fbdev,vesa means :
driver intel in use , fbdev and vesa driver available but not in use.

Thank you. So it's an "eats shoots and leaves" problem. That is interesting to me, because on my machine inxi -Gx says

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Graphics:  Card: Intel N10 Family Integrated Graphics Controller bus-ID: 00:02.0
           X.Org 1.10.4 drivers intel unloaded: fbdev,vesa Resolution 1680x1050@60.0hz
           GLX Renderer Mesa DRI Intel IGD x86/MMX/SSE2 GLX Version 1.4 Mesa 7.11 Direct Rendering Yes


but compiz-check says " Error: vesa driver in use [...] The vesa driver is not capable of running Compiz, you need to install the proper driver for your graphics card". So I thought "intel unloaded" was in agreement with compiz-check. Clearly my problem is not similar enough to yours that I can learn from your problem here, and I certainly don't know enough to help you, so I guess I'd better be going.