xcb_connect occasionally fails with xvfb

[Edgar Mobile]

I connect to an  Xvfb based x server from C++ using xcb_connect. However, occasionally the last xcb_connect call fails:


 xcb_connect: error code: 0 Display: :5 displayname: (null) screenp: 0

 xcb_connect: error code: 0 Display: :5 displayname: (null) screenp: -943246996

 xcb_connect: error code: 0 Display: :5 displayname: (null) screenp: -943246996

 xcb_connect: error code: 1 Display: :5 displayname: (null) screenp: -943246996


The last one fails with a XCB_CONN_ERROR.

Anyone has an idea how to debug this? Xvfb never produces messages be it on stdout ot stderr.

Regards
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://lists.x.org/archives/xorg/attachments/20220223/e542f82b/attachment.htm>