$ XPRA_XSHM=0 ./xpra/x11/shadow_x11_server.py test.png 2019-02-12 21:06:49,509 CUDA initialization (this may take a few seconds) 2019-02-12 21:06:49,616 CUDA 10.0.0 / PyCUDA 2018.1.1, found 1 device: 2019-02-12 21:06:49,617 + GeForce GTX 1070 @ 0000:01:00.0 (memory: 83% free, compute: 6.1) Traceback (most recent call last): File "./xpra/x11/shadow_x11_server.py", line 201, in <module> v = main(sys.argv[1]) File "./xpra/x11/shadow_x11_server.py", line 185, in main pil_image = Image.frombuffer("RGBA", (w, h), pixels, "raw", fmt, image.get_rowstride()) File "/usr/lib64/python2.7/site-packages/PIL/Image.py", line 2479, in frombuffer return frombytes(mode, size, data, decoder_name, args) File "/usr/lib64/python2.7/site-packages/PIL/Image.py", line 2412, in frombytes im.frombytes(data, decoder_name, args) File "/usr/lib64/python2.7/site-packages/PIL/Image.py", line 810, in frombytes d = _getdecoder(self.mode, decoder_name, args) File "/usr/lib64/python2.7/site-packages/PIL/Image.py", line 456, in _getdecoder return decoder(mode, *args + extra) ValueError: unknown raw mode
Fixed in r21643.
this ticket has been moved to: https://github.com/Xpra-org/xpra/issues/2143