Thank you Greg. The new version 1.2.5.1 works fine.

Bing-Rui

From: Greg Couch <gregc@cgl.ucsf.edu>
Date: Tuesday, June 15, 2021 at 10:16 PM
To: "Zhou, Bing-Rui (NIH/NCI) [E]" <bing-rui.zhou@nih.gov>, "ChimeraX-users@cgl.ucsf.edu" <ChimeraX-users@cgl.ucsf.edu>
Subject: Re: [chimerax-users] Chimerax 1.2.5 Ubuntu 16.04 failed to start

Thank you for reporting this.  There is a missing dependency on the libxcb-xinerama0 package.  Please install it with:

    sudo apt install libxcb-xinerama0

and then try ChimeraX 1.2.5 again.  This bug is also present in the current Ubuntu 18.04 and 20.04 downloads.  It will be fixed within 24 hours.

    -- Greg

On 6/13/2021 7:31 AM, Zhou, Bing-Rui (NIH/NCI) [E] via ChimeraX-users wrote:

Hello ChimeraX developer,

I am trying to update ChimeraX from v1.1 to v1.2.5 on a Ubuntu 16.04 Linux machine, but Chimerax v1.2.5 failed to start with the following error message:

> sudo apt-get install ~/Downloads/ucsf-chimerax_1.2.5_amd64.deb

>chimerax

qt.qpa.plugin: Could not load the Qt platform plugin "xcb" in "" even though it was found.

This application failed to start because no Qt platform plugin could be initialized. Reinstalling the application may fix this problem.

Available platform plugins are: eglfs, linuxfb, minimal, minimalegl, offscreen, vnc, wayland-egl, wayland, wayland-xcomposite-egl, wayland-xcomposite-glx, xcb.

Fatal Python error: Aborted

Current thread 0x00007f5866636700 (most recent call first):

  File "/usr/lib/ucsf-chimerax/lib/python3.8/site-packages/chimerax/ui/gui.py", line 157 in __init__

  File "/usr/lib/ucsf-chimerax/lib/python3.8/site-packages/ChimeraX_main.py", line 577 in init

  File "/usr/lib/ucsf-chimerax/lib/python3.8/site-packages/ChimeraX_main.py", line 1015 in <module>

  File "/usr/lib/ucsf-chimerax/lib/python3.8/runpy.py", line 87 in _run_code

  File "/usr/lib/ucsf-chimerax/lib/python3.8/runpy.py", line 194 in _run_module_as_main

Aborted (core dumped)

I could downgrade to ChimeraX v1.1 and it works fine, just wondering what has changed in v1.2.5 and if there is a fix for this issue.

Thanks,

Bing-Rui

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