MyTv:tvguide graphics visual artefacts

knutinh · 2006-10-09, 23:04

Living room HTPC
MP Version: 0.2.0.0 Final with SVN dated 06.10.2006
Skin: default
Windows Version: XP professional SP2
CPU Type: intel P4 Northwood 2.8 HT (@3 GHz)
Memory: 1GB dual channel ddr
Motherboard Chipset: intel 865
Video Card: Gigabyte nvidia geforce 6600GT passive
Video Card Driver: 91.33
Video Card Resolution: 1366x768 and 1280x720
Video Render Type: VMR9 renderless
Video Codec Type & Version: Nvidia purevideo 1.02.233
Audio Codec Type & Version: unshure
TV Card1: Terratec T^2
TV Card1 Type: DVB-T
TV Card1 Driver: Beta BDA 2.3.0.24
TV Card2: Saphire theatrix 550 pro
TV Card2 Type: analog PAL cable, hardware MPEG2
TV Card2 Driver: ATI Theater 550 Pro TV Tuner Drivers - 6.14.10.173
Sound Card: M-audio Audiophile 2496 connected using s/pdif
Sound Card Driver: 5.10.00.0051
Optional Log:
Optional References:
Using Silverstone lc 16m-s with iMon VFD and iMon PAD remotecontrol.
Using AnyDVD to remove FBI warnings and lower drive speed. Using PureVideo for DVD audio/video decoding.

"Dancing triangles" on top of the MP EPG. Not present in any otherapplication. Check out the supplied images

-k

baffledboy · 2006-10-10, 00:21

Don't want to worry you, but I had something similar to this which turned out to be an overheating graphics card - mine was the EXACT same model too. Turned out that the gunk connecting the gpu to the cooler had failed. I ended up installing a Zalman passive heat cooler instead, now it works a treat.

Callifo · 2006-10-10, 02:23

As mentioned, check the video card out. Artifacts can be produced by excess video overclocking or overheating.

wishywashy · 2006-10-10, 03:29

I have the artifacts as well. It only occurs on Blue2. My card is stock clock and shows no other signs of problems in other graphic intensive applications.

ronilse · 2006-10-10, 09:36

Hi,
This is a nvidia driver problem & have come in with the 90 series of drivers. If you remove all your channel thumbs (images) the problem it's gone. This can also happen in Recorded TV & Scheduled TV, where those images it's presented.
Don't think it is a MP bug, but will have an eye on this

Regards
Roy

starfire · 2006-12-20, 12:28

Any news on this, I'm getting it to with a Nvidia 6600GT card.

Never experienced graphics problems in my other programs and my card isn't reporting high temps.

Are we sure its a Nvidia driver issue?

knutinh · 2006-12-20, 12:42

I saw another related thread where disabling the check-box "Enable write combining" removed the problem.

right-click the desktop
"properties"
"settings"
"advanced"
"troubleshoot"
un-check "Enable write combining"

-k

starfire · 2006-12-20, 13:55

OK I will try that, thanks. I also randomly get a single or double white line appearing from top left of the screen diagonally to the center text below the EPG.

MrPaulo · 2006-12-21, 08:26

I had the exact same "dancing triangles" when going into the TV guide (usually just as you enter it). I also have an nvidia card.

I disabled "Endable Write Combining", rebooted, and they seemed to have gone. Been going in and out of the TV Guide for last 10 minutes and haven't seen any!

So - looks like it did the trick for me. Thanks knutinh! Much appreciated.

EDIT: Spoke too soon, they are still there.

starfire · 2006-12-22, 16:36

I tried disabling the write combining but it didn't help.

2006-10-09, 23:04	#1 (permalink)
knutinh Portal Member Join Date: Sep 2005 Posts: 555 Thanks: 0 Thanked 1 Time in 1 Post	MyTv:tvguide graphics visual artefacts Living room HTPC MP Version: 0.2.0.0 Final with SVN dated 06.10.2006 Skin: default Windows Version: XP professional SP2 CPU Type: intel P4 Northwood 2.8 HT (@3 GHz) Memory: 1GB dual channel ddr Motherboard Chipset: intel 865 Video Card: Gigabyte nvidia geforce 6600GT passive Video Card Driver: 91.33 Video Card Resolution: 1366x768 and 1280x720 Video Render Type: VMR9 renderless Video Codec Type & Version: Nvidia purevideo 1.02.233 Audio Codec Type & Version: unshure TV Card1: Terratec T^2 TV Card1 Type: DVB-T TV Card1 Driver: Beta BDA 2.3.0.24 TV Card2: Saphire theatrix 550 pro TV Card2 Type: analog PAL cable, hardware MPEG2 TV Card2 Driver: ATI Theater 550 Pro TV Tuner Drivers - 6.14.10.173 Sound Card: M-audio Audiophile 2496 connected using s/pdif Sound Card Driver: 5.10.00.0051 Optional Log: Optional References: Using Silverstone lc 16m-s with iMon VFD and iMon PAD remotecontrol. Using AnyDVD to remove FBI warnings and lower drive speed. Using PureVideo for DVD audio/video decoding. "Dancing triangles" on top of the MP EPG. Not present in any otherapplication. Check out the supplied images -k Attached Thumbnails

2006-10-10, 00:21	#2 (permalink)
baffledboy Portal Member Join Date: Sep 2006 Age: 39 Posts: 32 Thanks: 2 Thanked 0 Times in 0 Posts My System	Don't want to worry you, but I had something similar to this which turned out to be an overheating graphics card - mine was the EXACT same model too. Turned out that the gunk connecting the gpu to the cooler had failed. I ended up installing a Zalman passive heat cooler instead, now it works a treat. Last edited by baffledboy; 2006-10-10 at 00:24. Reason: Added more info!

2006-12-21, 08:26	#9 (permalink)
MrPaulo Portal Member Join Date: Dec 2006 Location: Wellington Posts: 28 Thanks: 3 Thanked 0 Times in 0 Posts Country:	I had the exact same "dancing triangles" when going into the TV guide (usually just as you enter it). I also have an nvidia card. I disabled "Endable Write Combining", rebooted, and they seemed to have gone. Been going in and out of the TV Guide for last 10 minutes and haven't seen any! So - looks like it did the trick for me. Thanks knutinh! Much appreciated. EDIT: Spoke too soon, they are still there. Last edited by MrPaulo; 2006-12-21 at 08:50.

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2006-10-10, 02:23	#3 (permalink)
Callifo Retired Team Member Join Date: Dec 2004 Location: Adelaide, Australia Age: 22 Posts: 1,444 Thanks: 0 Thanked 11 Times in 1 Post Country: My System	As mentioned, check the video card out. Artifacts can be produced by excess video overclocking or overheating.

2006-10-10, 03:29	#4 (permalink)
wishywashy Portal Member Join Date: Jan 2005 Location: Hill AFB, UT Age: 33 Posts: 458 Thanks: 15 Thanked 3 Times in 3 Posts Country: My System	I have the artifacts as well. It only occurs on Blue2. My card is stock clock and shows no other signs of problems in other graphic intensive applications.

2006-10-10, 09:36	#5 (permalink)
ronilse Portal Tester Join Date: Jul 2005 Posts: 3,204 Thanks: 19 Thanked 88 Times in 74 Posts Country: My System	Hi, This is a nvidia driver problem & have come in with the 90 series of drivers. If you remove all your channel thumbs (images) the problem it's gone. This can also happen in Recorded TV & Scheduled TV, where those images it's presented. Don't think it is a MP bug, but will have an eye on this Regards Roy

2006-12-20, 12:28	#6 (permalink)
starfire Portal Member Join Date: Dec 2006 Posts: 11 Thanks: 0 Thanked 0 Times in 0 Posts	Any news on this, I'm getting it to with a Nvidia 6600GT card. Never experienced graphics problems in my other programs and my card isn't reporting high temps. Are we sure its a Nvidia driver issue?

2006-12-20, 12:42	#7 (permalink)
knutinh Portal Member Join Date: Sep 2005 Posts: 555 Thanks: 0 Thanked 1 Time in 1 Post	I saw another related thread where disabling the check-box "Enable write combining" removed the problem. right-click the desktop "properties" "settings" "advanced" "troubleshoot" un-check "Enable write combining" -k

2006-12-20, 13:55	#8 (permalink)
starfire Portal Member Join Date: Dec 2006 Posts: 11 Thanks: 0 Thanked 0 Times in 0 Posts	OK I will try that, thanks. I also randomly get a single or double white line appearing from top left of the screen diagonally to the center text below the EPG.

2006-12-22, 16:36	#10 (permalink)
starfire Portal Member Join Date: Dec 2006 Posts: 11 Thanks: 0 Thanked 0 Times in 0 Posts	I tried disabling the write combining but it didn't help.