hi,

strange, X11 forwarding works fine for me on Raspbian which distro are you using ?

a

-- do it yourself http://antoine.villeret.free.fr

2013/1/28 Charles Goyard cg@fsck.fr

Hi list,

just starting using pd on the rpi. It works well, but there's something strange with X11 forwarding.

Doing: ssh -X 192.168.1.52 pd

fails with : X Error of failed request: BadAccess (attempt to access private resource denied) Major opcode of failed request: 18 (X_ChangeProperty)

Doing: ssh -Y 192.168.1.52 pd

works.

Doing: ssh -Y 192.168.1.52 sudo pd

fails with : debug2: X11 connection uses different authentication protocol. X11 connection rejected because of wrong authentication. Application initialization failed: couldn't connect to display "localhost:10.0"

So far I'm not that concerned with real-time priority, but what's my problem ? I found some clues on the internet but they were not helpful.

Commands like xterm and wish and exported to my display as needed.

Thanks for any idea.

Charles

---

Pd-list@iem.at mailing list UNSUBSCRIBE and account-management -> http://lists.puredata.info/listinfo/pd-list

Root cannot open a display owned by another user. Logging in as user1 and then running a forwarded X application as user2 will fail unless user2 can write to the same display.

As for ssh, I think -X is deprecated in favour of -Y for many reasons

Also, why use ssh? Unless you are exposing the RPi directly to the internet (It is a COW installed system, not a RO live system so could be compromised), then why bother? The encrytion overhead is quite a drag on bandwidth. At least turn the cipher to a lightweight one like Blowfish. Otherwise, open the X using xhost and export a display setting.

cheers, Andy

On Mon, Jan 28, 2013 at 03:26:01PM +0100, Charles Goyard wrote:

Hi list,

just starting using pd on the rpi. It works well, but there's something strange with X11 forwarding.

Doing: ssh -X 192.168.1.52 pd

fails with : X Error of failed request: BadAccess (attempt to access private resource denied) Major opcode of failed request: 18 (X_ChangeProperty)

Doing: ssh -Y 192.168.1.52 pd

works.

Doing: ssh -Y 192.168.1.52 sudo pd

fails with : debug2: X11 connection uses different authentication protocol. X11 connection rejected because of wrong authentication. Application initialization failed: couldn't connect to display "localhost:10.0"

So far I'm not that concerned with real-time priority, but what's my problem ? I found some clues on the internet but they were not helpful.

Commands like xterm and wish and exported to my display as needed.

Thanks for any idea.

Charles

---

Pd-list@iem.at mailing list UNSUBSCRIBE and account-management -> http://lists.puredata.info/listinfo/pd-list