9625 with Go6200 direct rendering bug ?

[pijalu]

Hi,

Didn't read anyone getting this funny issue:
On my laptop (sony vaio fs115-m), running gentoo, with Xorg 7.1 + compiz (head of today, with gtk-decorator), if I run compiz in direct mode, I have some limits on the number and/or size of the windows...

If I pass this limit, I get only black content or only the decoration.
Btw, this limit is small: max 2 terms

I can get the "content" back if I resize the window to a smaller size. Also, the maximum size seems to be linked to the number of windows + size.

Also, in indirect mode, everything is correct... As far as I can see, everything seems fine on the configuration side, compiz seems to be correctly linked...

So, any clue ?

I include screenshots + bug reports for info

Cheers

[shijtin]

Sorry, I don't have the solution, but you are not the only one (and I'm glad to see I'm not).

I have the exact same problem with a geforce 6200 turbocache under compiz or beryl. I can open more windows than 2 xterm, but not that much.

The indirect rendering solves the problem, but I can't get rid of the tearings in xv rendered videos.

The direct rendering solved my video tearings issues, but is unusable with this limitation.

[pijalu]

Glad to see someone else with same issue and with same hardware type... I can stop messing with my configuration now :-)

[jamesjones]

This is a shortcoming of the current implementation of GLX_EXT_texture_from_pixmap in the drivers. When video RAM has been exhausted, the driver does not behave well (you get blank windows). TurboCache memory is currently cannot be used with GLX_EXT_texture_from_pixmap, so these problems will be especially noticeable on these parts. We're working on improving these cases.

[rottame]

with direct rendering compiz is not usable on a 6200 tc... no more than 2-3 maximized windows... on a 1280x1024 screen
indirect rendering works... but with 10 windows it becomes sloooow

2 bug reports...
6200tc pcie and 6600gt agp

ciao
Angelo

[intangible]

I get the same problems with a Twinview Setup trying to use the latest Beryl on this card:

lspci|grep VGA
01:00.0 VGA compatible controller: nVidia Corporation NV37GL [Quadro FX 330/Quadro NVS280] (rev a2)

Only 64 megs ram on the card (a waste of a PCI-E slot?!); It jumps to mostly black windows instantly.

[miragedarksun]

I'd like to point out that this bug is present in every card, but depending on the amount of memory, the bug takes longer to appear. For example my 7900GT 256mb at 1680x1050 can take about 15 maximized windows plus some terminals. It's good enough for normal usage but definitely a bug that should be solved, with and without TurboCache. With my 7300 Go at 1280x800, i can only see 5 or 6 maximized windows, but that was expected because of TurboCache. The same problem was reported on a 6600 too.

For more details (with my bug-report if needed) see my post and others' in the original 9625 thread here.

[rottame]

sorry.... wrong thread...

[pijalu]

Originally Posted by jamesjones

This is a shortcoming of the current implementation of GLX_EXT_texture_from_pixmap in the drivers. When video RAM has been exhausted, the driver does not behave well (you get blank windows). TurboCache memory is currently cannot be used with GLX_EXT_texture_from_pixmap, so these problems will be especially noticeable on these parts. We're working on improving these cases.

Thanks for the "bug" confirmation (and especially to say that you will work on it )

[trevorj]

First of all, NVIDIA: Thanks for releasing early beta drivers with GLX_EXT_texture_from_pixmap!

This is a shortcoming of the current implementation of GLX_EXT_texture_from_pixmap in the drivers. When video RAM has been exhausted, the driver does not behave well (you get blank windows). TurboCache? memory is currently cannot be used with GLX_EXT_texture_from_pixmap, so these problems will be especially noticeable on these parts. We're working on improving these cases.

I think this should be put in the release notes though, especially for users of a low-memory graphics card with TC like me.

[aquila.deus]

Originally Posted by jamesjones

This is a shortcoming of the current implementation of GLX_EXT_texture_from_pixmap in the drivers. When video RAM has been exhausted, the driver does not behave well (you get blank windows). TurboCache memory is currently cannot be used with GLX_EXT_texture_from_pixmap, so these problems will be especially noticeable on these parts. We're working on improving these cases.

But why can't the driver just use AGPgart?? I have set it to 256MB... (total 1.5GB RAM)

[piotrq__]

I read this when is was on #beryl-dev few days ago:

<onestone> aaronp: is nvidia aware of the black windows (out of vram) problem? Is there any solution for this?
<aaronp> onestone: Yes, NVIDIA is aware of it.
<aaronp> We're looking into some way of having pixmaps in shared texturable system, or something.

So no worries! It'll be fixed! :-)