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Thread: Screen Flicker on Samsung Syncmaster @ 1920, Only works on lower resolution

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i'm running ubuntu 11.04 , purchased samsung syncmaster b2430.

if try run screen resolution @ 1920, bad intermittent flickering in general use , becomes unusable when viewing video

if run @ 1240 - fine ... that's not why bought 24" monitor.

when run lspci -v video controller.

00:0d.0 vga compatible controller: nvidia corporation c61 [geforce 7025 / nforce 630a] (rev a2) (prog-if 00 [vga controller])
subsystem: asrock incorporation device 03d6
flags: bus master, 66mhz, fast devsel, latency 0, irq 22
memory @ fa000000 (32-bit, non-prefetchable) [size=16m]
memory @ e0000000 (64-bit, prefetchable) [size=256m]
memory @ f9000000 (64-bit, non-prefetchable) [size=16m]
expansion rom @ fbfc0000 [disabled] [size=128k]
capabilities: <access denied>
kernel driver in use: nouveau
kernel modules: nouveau, nvidiafb


have suggestions resolving this?

an update above. colleague, running identical hardware/operating system can use same monitor without issues ... refresh rate of 50hz.

don't seem able change refresh 60hz 50hz on preferences>monitors.

there way this?


Forum The Ubuntu Forum Community Ubuntu Official Flavours Support Hardware [ubuntu] Screen Flicker on Samsung Syncmaster @ 1920, Only works on lower resolution


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