Messages in this thread | | | Date | Sun, 28 Jan 2007 16:27:56 -0800 | From | Andrew Morton <> | Subject | Re: [Linux-fbdev-devel] [PATCH] nvidiafb: allow ignoring EDID info |
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On Mon, 29 Jan 2007 11:12:57 +1100 "Dave Airlie" <airlied@gmail.com> wrote:
> > > Some nVidia video cards have broken EDID information. Using nvidiafb > > > with CONFIG_FB_NVIDIA_I2C enabled on these systems causes the console > > > framebuffer to use wrong timing information, causing the display to be > > > extremely 'snowy'. Since most distribution kernels are compiled with > > > CONFIG_FB_NVIDIA_I2C enabled, this prevents usage of the nvidia > > > framebuffer on said broken system without recompiling the kernel > > > (or at least the nvidiafb module). > > > > > > Solve the issue by introducing a new boolean module parameter (useedid) > > > which can be set to 0 to prevent the driver from using the EDID > > > information. > > > > > > If this patch is accepted, we can probably get rid of CONFIG_FB_NVIDIA_I2C > > > altogether. > > > > > > > That's a pretty sad solution. Is it possible to detect these bad cards at > > runtime via ther behaviour? If not, can we generate a blacklist for the > > known-bad cards based on PCI IDs or something? > > > > Because most users won't even be aware of the module option: they'll just > > know that their card doesn't work right. > > This isn't a card problem this is a monitor problem, the card just > passes through the edid data from the monitor... or else the > programming of the card registers from edid is wrong.. >
oh. I'll take that as an ack :(
(where'd my cc go?)
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