[xcrysden] The rapid screen flickering issue on Mac OS X

[Zhu, Jian-Xin]

Hi Dan, 

As a followup to my previous email, it looks I should have run "portindex"
under /Users/Admin/ports rather than under /Users/Admin/ports/x11/mesa

But I got the error during the "sudo port install mesa" stage

Š.
To make python 2.7 the default (i.e. the version you get when you run
'python'), please run:
        sudo port select --set python python27

--->  Cleaning python27
--->  Computing dependencies for mesa
could not read "/Users/Admin/ports/x11/mesa/Portfile": permission denied
Error: Status 1 encountered during processing.
To report a bug, see <http://guide.macports.org/#project.tickets>



I don't see there is a permission problem.

~/ports/x11/mesa] Admin% ls -al
total 16
drwxr-xr-x  4 Admin  staff   136 Jan 23 15:11 ./
drwxr-xr-x  3 Admin  staff   102 Jan 23 14:15 ../
-rw-r--r--  1 Admin  staff  2531 Jan 22 14:39 Portfile
lrwxr-xr-x  1 root   staff    67 Jan 23 15:01 work@ ->
/opt/local/var/macports/build/_Users_Admin_ports_x11_mesa/mesa/work

Thanks for the help.

Jian-Xin






-----Original Message-----
From: "Dan Michael O. Heggø" <d.m.o.heggo at ub.uio.no>
Reply-To: XCrySDen mailing list <xcrysden at democritos.it>
Date: Mon, 23 Jan 2012 21:30:09 +0100
To: XCrySDen mailing list <xcrysden at democritos.it>
Subject: Re: [xcrysden] The rapid screen flickering issue on Mac OS X

>Thanks for pointing me in the right direction!
>
>I tried replacing mesa-7.11.2 with mesa-7.0.2, and with everything
>else being equal, the flickering issue then disappeared (I even tried
>swapping mesa-7.11.2 back again, and there the flickering was back
>again. So it's related to some changes in mesa between version 7.0.2
>and 7.11.2. Just for testing, I tried building some intermediate
>versions (7.0.4, 7.1 and 7.2), but neither built easily, and I didn't
>want to spend a lot of time on that. I'm not really sure how to follow
>this up.
>
>In case anyone's interested in having mesa-7.0.2 installed through
>macports, my modified portfile for mesa-7.0.2 is here:
>https://gist.github.com/1658983
>It can be put in a local repo, that will take precedence over the
>remote repo, which can be quite useful:
>http://guide.macports.org/#development.local-repositories
>
>Dan Michael
>
>
>On 23 January 2012 11:34, Tone Kokalj <tone.kokalj at ijs.si> wrote:
>>
>> Concerning the rapid screen flickering issue on Mac OS X, I forward the
>> email of the Hanspeter Niederstrasser, who have managed the xcrysden @
>> fink.
>>
>> -------- Forwarded Message --------
>>> From: Hanspeter Niederstrasser <hanspeter at snaggledworks.com>
>>> To: tone.kokalj at ijs.si
>>> Cc: "Dan Michael O. Heggø" <d.m.o.heggo at ub.uio.no>
>>> Subject: Re: [Fwd: [xcrysden] The rapid screen flickering issue on Mac
>>> OS X]
>>> Date: Fri, 20 Jan 2012 12:39:06 -0500
>>>
>>> That user is using MacPorts (a different OS X package manager from
>>>Fink)
>>> and it's probable that their libraries are built with different
>>> settings.  A quick glance shows that MacPorts uses mesa-7.11.2 and Fink
>>> has the older 7.0.2, so it might be due to version issues.  Fink is
>>> still on an older version for historical reasons.
>>>
>>> I definitely don't see any flickering in xcrysden here with the Fink
>>> install on 10.7.  The only quick issue I noticed when loading one of
>>>the
>>> sample files was that turning on aliasing made the dragging and
>>>rotating
>>> very slow, but I think that's primarily a lack of hardware
>>>acceleration.
>>>   No flickering though.
>>>
>>> I would advise the user (CC'd) to ask the MacPorts mesa maintainer as
>>>he
>>> might know more about a cause or workaround.  If he wants to invest the
>>> time, he could also try installing xcrysden through Fink to see if the
>>> flicker disappears so a hardware issue can be eliminated as a
>>> possibility .  But building all of xcrysden's dependencies from scratch
>>> (esp gcc46) for just a test is quite an undertaking.
>>>
>>> Hanspeter
>>
>> --
>> Anton Kokalj
>> J. Stefan Institute, Jamova 39, 1000 Ljubljana, Slovenia
>> (tel: +386-1-477-3523 // fax:+386-1-477-3822)
>>
>> Please, if possible, avoid sending me Word or PowerPoint attachments.
>> See:  http://www.gnu.org/philosophy/no-word-attachments.html
>>
>> _______________________________________________
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>> XCrySDen at democritos.it
>> http://www.democritos.it/mailman/listinfo/xcrysden
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