[Nouveau] NVAC "No Signal"

[poma]

On 19.10.2016 17:03, Karol Herbst wrote:

> You don't get why I try to say. We have to actually find out when to
> apply this workaround, not to create some silly whitelist/blacklist.
> It's the last option, we never want to actually use.
> 

Well if you do not say, who can understand!? :)
Besides, you can mock with "silly" whitelist/blacklist", however there is nothing wrong with the method as such, it is used practically everywhere.

> And even if we would have to create such lists, who tells us, that if
> affects every GPU with your device id? Usually quirks are applied
> depending on the sub-vendor-id and sub-device-id if actually required.
> 
> In the end we need something like this: If byte X in table Y is set in
> the vbios or if bits A-B in reg Z in the MMIO space are set to
> whatever, we have to apply that workaround.
> 
> In the end we should also wait until Ben replies, because he might
> know the exact reasons why this workaround was actually needed.
> 

If you eager to leave it broken even more than three months that have already been passed since the original commit ...

> We might have a GPU with the same chipset like yours and we might be
> able to verify the issue
> 

Ah, I see.
You do not have confidence in my test results, good to know.

Oh! Carol