How to get decently uniform samples of the HP2480ZX monitor? (Was:) Re: 10-bit computer2monitor connection
How to get decently uniform samples of the HP2480ZX monitor? (Was:) Re: 10-bit computer2monitor connection
- Subject: How to get decently uniform samples of the HP2480ZX monitor? (Was:) Re: 10-bit computer2monitor connection
- From: edmund ronald <email@hidden>
- Date: Thu, 10 Sep 2009 10:47:21 +0200
Maybe someone at HP can tell us how to get decently uniform samples of
the HP2480ZX monitor? We're the crowd who write software and advise
clients, and if we don't like HP monitors we're not exactly going to
recommend them.
Edmund
On Thu, Sep 10, 2009 at 10:37 AM, Kai-Uwe Behrmann <email@hidden> wrote:
> Am 07.09.09, 21:32 +0200 schrieb Kai-Uwe Behrmann:
>>
>> Am 07.09.09, 12:20 -0700 schrieb Hal V. Engel:
>>>
>>> On Monday 07 September 2009 10:33:19 am Kai-Uwe Behrmann wrote:
>>>>
>>>> Hello Klaus and Edmund,
>>>>
>>>> I know you have bought the HP LP2480ZX 10-bit monitor device. After a
>>>> small job and a nice offer (demo device) I can afford one and would like
>>>> to work in Oyranos for supporting that glorious device.
>>>>
>>>> My first guess is, I need as well a new graphics card or laptop with
>>>> display port (DP v1.1). Which cards do you use or recommend?
>>>
>>> With the FOSS software that HP put on sourceforge in December and a
>>> supported
>>> color meter (X-Rite Chroma, i1 Display 2 or LT or I1 Pro) you should be
>>> able
>>> to calibrate the internal LUTs of this monitor on Linux. I asked in the
>>> forums about getting the linux drivers and the HP developer replied after
>>> waiting about 3 weeks that users should contact Ray Chandler (I probably
>>> spelled his name wrong) at X-Rite to get the drivers.
>>
>> Ray Cheydleur <email@hidden> He is present at the colorsync email
>> list.
>>
>>> The other issue is that not all video drivers support 10 bit/channel mode
>>> and
>>> it looks like you will need a recent version of X11 as well since it
>>> appears
>>> that 10 bit per channel support was added during the 7.4 release cycle.
>>> I
>>> also have been following the xorg developers email list and I know that
>>> the
>>> display port code is still very new and likely very experimental since
>>> they
>>> have been doing the work via reverse engineering since they can't get the
>>> specs. I am not sure what cards have display port support at this point
>>> but I
>>> suspect that it is limited since it was the Intel guys who where working
>>> on
>>> it. I think that the proprietary nvidia and AMD drivers also have
>>> display
>>> port support. Also on the nvidia side you will need a Quadro card since
>>> they
>>> have disabled 10 bit per channel support in the rest of the line. There
>>> might
>>> be the same type of thing in the AMD line of cards.
>>
>> Really disabled in hardware? That would be bad news. I will rephrase on
>> OpenICC about that.
>>
>>> I have also read that HP has had QA problems with these monitors.
>>
>> Yes. I want to look closely at the device tomorrow.
>
> Since yesterday a 2008/22 build device is here. The center is obviously
> redish compared to the border and left, which tents to the complementary
> colour (greenish). This is small and for an untrained eye only visible on a
> gray or white reactangle, but for colour work not good. Lets see to exchange
> this.
>
> Unfortunedly my demo device would take months back over the distributor path
> (Dead On Arrival).
> So I am forced to the on site replacement with a expectedly already used
> instrument.
>
>
> Its now the loudest device here ;-) It runs a cooling fan :-))
> They must have build in a embedded computer.
>
> As well I see some curve shape issues.
>
> Kai-Uwe
>
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