Hi Alan,

I haven't found a workaround.  For me, this is basic enough functionality
(that seemed broken for multiple years) that I've given up on MK.  If
someone were to have a 'known good' VNC setup, I'd happily switch back.




On Mon, Sep 10, 2018 at 9:06 AM mugginsac <[email protected]> wrote:

> Brandon,
>
> Did you ever solve this issue? I am seeing the same thing sporadically.
> Sometimes it will run fine and other times the axis window will just go
> away when it is starting up.
> I am using "ssh -X ..." from my Mac. I have three different BBBs, one with
> a Xylotex-DB25, one with a CRAMPS and another with a BeBoPr-Bridge.
> I have XQuartz on my mac.
>
> An aside I noticed recently that scp no longer works from the BBB back to
> the Mac after I connect to an ssh session, but it was working a few days
> ago.
>
> Alan
>
> On Saturday, June 30, 2018 at 6:14:56 PM UTC-7, Brandon Heller wrote:
>>
>> At the end of my rope for machinekit on this one, so any pointers would
>> be appreciated.
>>
>> I have a BBB + CRAMPS that I'd like to use to control my mill, remotely.
>> Via both X forwarding and VNC, I can't get a reliable display.
>>
>> *Does anyone have a similar setup which they have working?  *
>>
>> What's frustrating is that this working previously (though not reliably),
>> on the same SW+HW combo and same .ini file.
>>
>> Long version with more error details:
>>
>> For example:, 'ssh -Y [email protected]', followed by 'machinekit',
>> brings up the .ini selector screen.  I can select an option, then it
>> shows Machinekit loading icon, then the expected Axis screen, which
>> minimizes, pops back up, and then disappears.  At one point in the past I
>> was able to see the screen load, and then interact with it; the problem
>> before wasn't repeatable, but now it just doesn't work.  Apparently XQuartz
>> can have issues; this is what I see with XQuartz 2.7.8, and with 2.7.11 I
>> don't even get to the .ini selector screen.
>>
>> If I run 'vncserver' and connect to the VNC screen from the Mac, the
>> final Axis loading screen fails, and just shows nothing.
>>
>> With various combos of XQuartz, I've see all a variety of GLX errors,
>> shown below.
>>
>> Using VNCServer, I see this one, error 148:
>>
>> emcTaskInit: using builtin interpreter
>>
>> X Error of failed request:  GLXBadRenderRequest
>>
>>   Major opcode of failed request:  148 (GLX)
>>
>>   Minor opcode of failed request:  1 (X_GLXRender)
>>
>>   Serial number of failed request:  4284
>>
>>   Current serial number in output stream:  4284
>>
>> Shutting down and cleaning up Machinekit...
>>
>> exiting HAL component Therm
>>
>> Cleanup done
>>
>>
>> Seen with X
>>
>> emcTaskInit: using builtin interpreter
>>
>> libGL error: No matching fbConfigs or visuals found
>>
>> libGL error: failed to load driver: swrast
>>
>> X Error of failed request:  BadValue (integer parameter out of range for
>> operation)
>>
>>   Major opcode of failed request:  149 (GLX)
>>
>>   Minor opcode of failed request:  3 (X_GLXCreateContext)
>>
>>   Value in failed request:  0x0
>>
>>   Serial number of failed request:  684
>>
>>   Current serial number in output stream:  685
>>
>>
>> Upon close with X:
>>
>> X Error of failed request:  GLXBadContextTag
>>
>>   Major opcode of failed request:  150 (GLX)
>>
>>   Minor opcode of failed request:  103 (X_GLXDeleteLists)
>>
>>   Serial number of failed request:  43107
>>
>>   Current serial number in output stream:  43108
>>
>>
>> I've tried to run 'glxinfo' to see some more details but can't find the
>> package from my BBB.
>>
>>
>> Am using a fresh SD card image from a month ago.
>>
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