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#1 | |
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Registered User
Join Date: Aug 2008
Posts: 6
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Hello,
I've bought the Asrock K10N78FullHD-hSLI R3.0 with an integrated GeForce 8200 Graphic-Chip. I've installed Ubuntu 8.04 32bit, downloaded NVIDIA-Linux-x86-173.14.12-pkg1.run and installed the driver. Now I'm able to select the 1680x1050 that my TFT runs. But the screen flashes from time to time. Especially when I enable 3d effects or watch a video (not in fullscreen). I've also tried the 64 bit version of Ubuntu and openSuse 11.0. They all have these flashing. I've also tried to reduce the resolution to 1280x1024. The flashing screen kept. Using vesa shows no flashing screen. So the hardware seems to be ok. Unfortunately Vesa does not support the 1680x1050 of my TFT so I need the NVidia driver to get working without flashing. I haven't found any errors in /var/log/Xorg.0.log. Has anybody any idea what else I could try? Is the driver for the 8200 stable or beta? Is there any release of a new driver planned? regards joerg |
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#2 | |
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Registered User
Join Date: Aug 2007
Location: Austin, TX
Posts: 120
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That's caused by a bug in Powermizer stepping up/down the GPU clocks to save power.
I don't have a solution (other than forcing the performance mode to Maximum, but that's horrible in terms of battery/heat on a laptop), I'm just living with it on my laptop in the hope that a future driver fixes it. |
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#3 |
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Registered User
Join Date: Aug 2008
Posts: 6
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Thanks for the info. I've found a lot of hits at google for the powermixer. Neither
Option "RegistryDwords" "PowerMizerLevel=0x1" nor Option "Coolbits" "1" (I've tried to reduce the clock speed but it always flipped back to 500. or options nvidia NVreg_DeviceFileUID=0 NVreg_DeviceFileGID=44 NVreg_DeviceFileMode=0660i NVreg_Mobile=1 NVreg_RegistryDwords="PerfLevelSrc=0x2222" helped me. The flashing is still there. Since I've got a desktop I wouldn't even care about running the gpu at full speed. But it seem that there is no way to turn off the powermizer. Boy, I'll just want to get away the flashing. I've even tried these endless loop quering nvidia-settings or glx-info. Both didn't help (or at least it wasn't visibile). regards joerg |
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#4 | |
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Registered User
Join Date: Jan 2008
Posts: 330
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Have you tried another driver version? Like 177 beta or better yet, 169.12?
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#5 |
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Registered User
Join Date: Aug 2008
Posts: 6
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#6 | |
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Registered User
Join Date: Aug 2008
Posts: 4
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I'm not sure if it is the same problem but my 8200 flashed and would cause breakup in the audio. I'm using an IDE drive and still had my SAT controller enabled. After going into the BIOS and disabling everything that wasn't present (Floppy, SATA) the problem went away.
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#7 |
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Registered User
Join Date: Aug 2008
Posts: 6
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It's getting stranger every day. Yesterday I've written a bug report to nvidia. I used google webmail. I did not nothing except typing this damn mail and the flashing increased steadily.
Today I've downloaded a doom3 demo, played it at the highest detail level for about 15 to 30 minutes (I had pauses due to sound problems). The game felt a little bit slow (I guess the 8200 hasn't enough power for it) but there was no flashing. Now it gets even stranger. I hadn't a flashing for the last one and a half hour. I could surf on the web without flashing. I'm very curious what happens when I start the computer tomorrow. |
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#8 |
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Registered User
Join Date: Aug 2008
Posts: 6
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After booting the system today the flashing was back (what a suprise) but playing five minutes doom3 at highest detail level and the flashing got away until now (about 1 hour).
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#9 |
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Registered User
Join Date: Aug 2008
Posts: 6
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Hello all,
NVIDIA-Linux-x86-177.67-pkg1 seems to fix the problem for me on the 32 bit version of ubuntu. I have turned on not special flags, I've justed installed the driver. |
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