[argyllcms] Re: First experiences with i1pro linux

On Sat, 2008-05-31 at 11:47 +0200, Geert Janssens wrote:
> Hi,
> 
> I have just started experimenting with my new eye one pro on linux.

I haven't been doing much with color management lately, having gotten
involved with another project, so I am a little out of touch.

But I believe that I am using the i1 pro with the same version of argyll
under Fedora Core 7.   I don't think I had to do anything special with
udev---I think my system just found the device---but perhaps I am
forgetting something I did.  I don't have the problems you report. I
believe all the argyll problems just work.  I would have to go back to
double check that, which I won't be doing for a while at least, but I
really don't remember having to do any fiddling.

> 
> I have installed Argyll CMS 0.7b8 and configured udev according to the 
> installation guidelines.
> 
> It seems this is sufficient to make the i1 work. I can run dispcal -yl -r and 
> the device is found.
> 
> Question 1: I have to disconnect the i1 from the usb port after each run and 
> reconnect it before a can perform a second dispcal run. If I try to run a 
> second test without disconnecting, I get an error:
> dispcal: Error - dispread failed with 'Instrument Access Failed'

As I said, I don't believe this happens with my system.
> 
> Checking /proc/bus/usb/devices shows the device disappears after the first 
> run. Is this normal behaviour or is something wrong with my configuration 

I don't think it is normal.

> ?
> 
> 
> Before starting the actual calibration, I first wanted to test the current 
> settings of my Eizo LCD monitor with dispcal -yl -r
> 
> I had heavily modified the controls on this monitor in the past to match some 
> other screen. The first test gave me some results. I still have to learn how 
> to interpret all these numbers, but that's not a question for this e-mail.
> 
> I am following the tutorials in the Argyll documentation to do a calibration, 
> which suggests to reset the lcd to factory defaults for a start. So I did.
> 
> With the factory defaults set, dispcal -yl -r doesn't run succesfully 
> anymore. 
> I allways get this error:
> Sample read failed due to misread
> Hit Esc, ^C or Q to give up, any other key to retry:
> when dispcal tries to read the white test window.
> 
> When I reduce the brightness of the screen to 50%, the test succeeds.
> 
> Is this behaviour expected and how do I best deal with it?
> 
> Thank you in advance,
> Geert
> 
>

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