Amazon EC2 Ubuntu + Xvfb: errore libGL: impossibile caricare il driver: swrast

Question

Sto provando a eseguire ParaView tramite Xvfb in un'istanza Ubuntu su Amazon EC2. Ho installato pacchetti relativi X11/Xvfb come da http://mike.ucoz.com/publ/programming/ubuntu/selenium_ubuntu_amazon_ec2_headless/8-1-0-4

Ma non riesco a superare un errore associato alla libreria di swrast.

Ecco il messaggio quando si avvia Xfvb

$ export DISPLAY=:99 
$ Xvfb $DISPLAY & 
Initializing built-in extension Generic Event Extension 
Initializing built-in extension SHAPE 
Initializing built-in extension MIT-SHM 
Initializing built-in extension XInputExtension 
Initializing built-in extension XTEST 
Initializing built-in extension BIG-REQUESTS 
Initializing built-in extension SYNC 
Initializing built-in extension XKEYBOARD 
Initializing built-in extension XC-MISC 
Initializing built-in extension SECURITY 
Initializing built-in extension XINERAMA 
Initializing built-in extension XFIXES 
Initializing built-in extension RENDER 
Initializing built-in extension RANDR 
Initializing built-in extension COMPOSITE 
Initializing built-in extension DAMAGE 
Initializing built-in extension MIT-SCREEN-SAVER 
Initializing built-in extension DOUBLE-BUFFER 
Initializing built-in extension RECORD 
Initializing built-in extension DPMS 
Initializing built-in extension X-Resource 
Initializing built-in extension XVideo 
Initializing built-in extension XVideo-MotionCompensation 
Initializing built-in extension SELinux 
Initializing built-in extension GLX 
[dix] Could not init font path element /var/lib/defoma/x-ttcidfont-conf.d/dirs/TrueType, removing from list! 

non riuscivo a vedere nulla drammatico sopra. Ma quando si esegue glxinfo

$ glxinfo 
name of display: :99 
libGL: OpenDriver: trying /usr/lib/x86_64-linux-gnu/dri/tls/swrast_dri.so 
libGL: OpenDriver: trying /usr/lib/x86_64-linux-gnu/dri/swrast_dri.so 
libGL error: failed to load driver: swrast 
Error: couldn't find RGB GLX visual or fbconfig 

144 GLXFBConfigs: 
    visual x bf lv rg d st colorbuffer sr ax dp st accumbuffer ms cav 

Nota:

$ ls /usr/lib/x86_64-linux-gnu/dri/ 
dummy_drv_video.so nouveau_dri.so  r300_dri.so radeonsi_dri.so 
i915_dri.so   nouveau_vieux_dri.so r600_dri.so swrast_dri.so 
i965_dri.so   r200_dri.so   radeon_dri.so vmwgfx_dri.so 

Grazie in anticipo.

Answer 1

Supponendo che si è xvfb-run installato, si può provare con:

xvfb-run --auto-servernum -s "-screen 0 640x480x24" <something_that_needs_X11> 

Fonte: https://bugzilla.redhat.com/show_bug.cgi?id=904851#c5

Answer 2

Amazon EC2 utilizza GPU Nvidia, quindi il problema potrebbe essere causato dal pilota NV.

Basta fare un tentativo, eseguirlo con contenitore finestra mobile, in base alla mia dockerfile Dockerfile_cuda80

Questa dockerfile si basa immagine ufficiale CUDA su, modificato per funzionare tutti i campioni CUDA con OpenGL, si dovrebbe usare nvidia-finestra mobile per compilare & eseguirlo.

Questo risolve il mio problema simile durante l'esecuzione del programma Windows tramite WINE.