Cannot attach to sessions with OpenGL enabled. (When I connect with "--opengl=no" it works fine, otherwise I get a segfault).
Tracing the code with pdb, I found that the segfault occcurs at line 178 of client/gl/gl_check.py#L178:
gl_version_str = glGetString(GL_VERSION)
installed from deb package 0.15.8+dfsg-1 Debian sid (unstable), amd64
Full log pasted below:
$ xpra -d all attach :33 2015-11-22 21:40:14,480 cannot use pycups for printing: No module named cups 2015-11-22 21:40:14,579 vp8 codec defaults: 2015-11-22 21:40:14,579 target_bitrate=256 2015-11-22 21:40:14,579 min_quantizer=4 2015-11-22 21:40:14,579 max_quantizer=63 2015-11-22 21:40:14,579 undershoot_pct=100 2015-11-22 21:40:14,580 overshoot_pct=100 2015-11-22 21:40:14,580 our configuration: 2015-11-22 21:40:14,580 target_bitrate=16 2015-11-22 21:40:14,580 min_quantizer=35 2015-11-22 21:40:14,580 max_quantizer=47 2015-11-22 21:40:14,580 undershoot_pct=100 2015-11-22 21:40:14,580 overshoot_pct=100 2015-11-22 21:40:14,580 vpx_codec_enc_init_ver for vp8 succeeded 2015-11-22 21:40:14,581 vp8 setting cpu speed to -5 2015-11-22 21:40:14,581 vp8 setting cpu speed to -10 2015-11-22 21:40:14,582 vpx_codec_encode for vp8 took 0.3ms (deadline=0ms for speed=-1, quality=-1) 2015-11-22 21:40:14,582 vpx returning vp8 image: 49 bytes 2015-11-22 21:40:14,582 vp9 codec defaults: 2015-11-22 21:40:14,582 target_bitrate=256 2015-11-22 21:40:14,582 min_quantizer=0 2015-11-22 21:40:14,582 max_quantizer=63 2015-11-22 21:40:14,582 undershoot_pct=25 2015-11-22 21:40:14,582 overshoot_pct=25 2015-11-22 21:40:14,582 our configuration: 2015-11-22 21:40:14,582 target_bitrate=16 2015-11-22 21:40:14,583 min_quantizer=35 2015-11-22 21:40:14,583 max_quantizer=47 2015-11-22 21:40:14,583 undershoot_pct=100 2015-11-22 21:40:14,583 overshoot_pct=100 2015-11-22 21:40:14,590 vpx_codec_enc_init_ver for vp9 succeeded 2015-11-22 21:40:14,590 vp9 setting periodic Q boost to 0 2015-11-22 21:40:14,590 vp9 setting cpu speed to -3 2015-11-22 21:40:14,590 vp9 setting lossless to 0 2015-11-22 21:40:14,590 vp9 setting cpu speed to -5 2015-11-22 21:40:14,590 vp9 setting lossless to 0 2015-11-22 21:40:14,592 vpx_codec_encode for vp9 took 1.5ms (deadline=0ms for speed=-1, quality=-1) 2015-11-22 21:40:14,592 vpx returning vp9 image: 34 bytes 2015-11-22 21:40:14,651 av_enum(AV_PIX_FMT_RGB24)=2 2015-11-22 21:40:14,651 av_enum(AV_PIX_FMT_BGR24)=3 2015-11-22 21:40:14,651 av_enum(AV_PIX_FMT_0RGB)=295 2015-11-22 21:40:14,651 av_enum(AV_PIX_FMT_BGR0)=298 2015-11-22 21:40:14,651 av_enum(AV_PIX_FMT_ARGB)=27 2015-11-22 21:40:14,651 av_enum(AV_PIX_FMT_BGRA)=30 2015-11-22 21:40:14,651 av_enum(AV_PIX_FMT_YUV420P)=0 2015-11-22 21:40:14,651 av_enum(AV_PIX_FMT_YUV422P)=4 2015-11-22 21:40:14,651 av_enum(AV_PIX_FMT_YUV444P)=5 2015-11-22 21:40:14,652 av_enum(AV_PIX_FMT_GBRP)=82 2015-11-22 21:40:14,652 swscale pixel formats: {'YUV422P': <xpra.codecs.csc_swscale.colorspace_converter.CSCPixelFormat object at 0x7f4884db5150>, 'BGR': <xpra.codecs.csc_swscale.colorspace_converter.CSCPixelFormat object at 0x7f4884db5030>, 'BGRX': <xpra.codecs.csc_swscale.colorspace_converter.CSCPixelFormat object at 0x7f4884db5078>, 'GBRP': <xpra.codecs.csc_swscale.colorspace_converter.CSCPixelFormat object at 0x7f4884db51e0>, 'RGB': <xpra.codecs.csc_swscale.colorspace_converter.CSCPixelFormat object at 0x7f4887ac3ed0>, 'YUV420P': <xpra.codecs.csc_swscale.colorspace_converter.CSCPixelFormat object at 0x7f4884db50c0>, 'XRGB': <xpra.codecs.csc_swscale.colorspace_converter.CSCPixelFormat object at 0x7f4884db5108>, 'YUV444P': <xpra.codecs.csc_swscale.colorspace_converter.CSCPixelFormat object at 0x7f4884db5198>} 2015-11-22 21:40:14,652 colorspaces: ['RGB', 'BGR', 'XRGB', 'BGRX', 'YUV420P', 'YUV422P', 'YUV444P', 'GBRP'] 2015-11-22 21:40:14,652 SWS_BICUBIC=4 2015-11-22 21:40:14,652 ('SWS_BICUBIC',)=4 2015-11-22 21:40:14,652 SWS_BICUBLIN=64 2015-11-22 21:40:14,652 ('SWS_BICUBLIN',)=64 2015-11-22 21:40:14,652 SWS_BILINEAR=2 2015-11-22 21:40:14,652 ('SWS_BILINEAR',)=2 2015-11-22 21:40:14,652 SWS_FAST_BILINEAR=1 2015-11-22 21:40:14,652 ('SWS_FAST_BILINEAR',)=1 2015-11-22 21:40:14,652 swscale flags: [(30, <xpra.codecs.csc_swscale.colorspace_converter.SWSFlags object at 0x7f4887ab9d50>), (40, <xpra.codecs.csc_swscale.colorspace_converter.SWSFlags object at 0x7f4887ab9d20>), (60, <xpra.codecs.csc_swscale.colorspace_converter.SWSFlags object at 0x7f4887ab9db0>), (80, <xpra.codecs.csc_swscale.colorspace_converter.SWSFlags object at 0x7f4887ab9e40>)] 2015-11-22 21:40:14,661 csc_cython: byteorder(BGRA)=(0, 1, 2, 3) 2015-11-22 21:40:14,662 csc_cython: byteorder(BGR)=(2, 1, 0) 2015-11-22 21:40:14,662 csc_cython: byteorder(RGBX)=(0, 1, 2, 3) 2015-11-22 21:40:14,662 csc_cython: byteorder(RGB)=(2, 1, 0) 2015-11-22 21:40:14,892 avcodec2.init_module: CODECS=['h264', 'vp8', 'vp9', 'h265'] 2015-11-22 21:40:14,896 webp.compress(1536 bytes, 24, 16, 24, 50, 50, True) buf=0x2ac55f0 2015-11-22 21:40:14,896 webp.compress config: lossless=0, quality=50.0, method=3, alpha=1,1,50 2015-11-22 21:40:14,898 webp.compress ratio=22% 2015-11-22 21:40:14,898 webp.compress(1536 bytes, 24, 16, 24, 50, 50, False) buf=0x2ac55f0 2015-11-22 21:40:14,898 webp.compress config: lossless=0, quality=50.0, method=3, alpha=0,0,0 2015-11-22 21:40:14,898 webp.compress ratio=118% 2015-11-22 21:40:14,898 WebPGetEncoderVersion()=0x403 2015-11-22 21:40:14,905 webp decompress found features: width=24, height=16, has_alpha=1, input rgb_format=None 2015-11-22 21:40:14,905 webp decompress found features: width=24, height=16, has_alpha=1, input rgb_format=None 2015-11-22 21:40:14,905 WebPGetDecoderVersion()=0x403 2015-11-22 21:40:15,479 xpra gtk2 client version 0.15.8 (r11211) 2015-11-22 21:40:15,707 found the following plugins: ['3gppmux', 'a52dec', 'aacparse', 'aasink', 'ac3iec958', 'ac3parse', 'adder', 'adpcmdec', 'adpcmenc', 'agingtv', 'aiffmux', 'aiffparse', 'alawdec', 'alawenc', 'alpha', 'alphacolor', 'alsamixer', 'alsasink', 'alsasrc', 'amrnbdec', 'amrnbenc', 'amrparse', 'amrwbdec', 'apedemux', 'apev2mux', 'apexsink', 'appsink', 'appsrc', 'asfdemux', 'asfmux', 'asfparse', 'aspectratiocrop', 'assrender', 'asteriskh263', 'audioamplify', 'audiochebband', 'audiocheblimit', 'audioconvert', 'audiodynamic', 'audioecho', 'audiofirfilter', 'audioiirfilter', 'audioinvert', 'audiokaraoke', 'audiopanorama', 'audioparse', 'audiorate', 'audioresample', 'audiosegmentclip', 'audiotestsrc', 'audiowsincband', 'audiowsinclimit', 'auparse', 'autoaudiosink', 'autoaudiosrc', 'autoconvert', 'autovideoconvert', 'autovideosink', 'autovideosrc', 'avidemux', 'avimux', 'avisubtitle', 'bayer2rgb', 'bin', 'bpmdetect', 'breakmydata', 'bulge', 'burn', 'bz2dec', 'bz2enc', 'cacasink', 'cairooverlay', 'cairorender', 'cairotextoverlay', 'cairotimeoverlay', 'camerabin', 'camerabin2', 'capsdebug', 'capsfilter', 'capssetter', 'cdaudio', 'cdiocddasrc', 'cdparanoiasrc', 'cdxaparse', 'checksumsink', 'chopmydata', 'chromahold', 'chromium', 'circle', 'clockoverlay', 'cmmldec', 'cmmlenc', 'cogcolorconvert', 'cogcolorspace', 'cogdownsample', 'coglogoinsert', 'cogmse', 'cogscale', 'coloreffects', 'colorspace', 'compare', 'cpureport', 'curlsink', 'cutter', 'dataurisrc', 'dc1394src', 'dcaparse', 'dccpclientsink', 'dccpclientsrc', 'dccpserversink', 'dccpserversrc', 'debugspy', 'decklinksink', 'decklinksrc', 'decodebin', 'decodebin2', 'deinterlace', 'deinterleave', 'dfbvideosink', 'dicetv', 'diffuse', 'dilate', 'diracparse', 'dodge', 'dtmfdetect', 'dtmfsrc', 'dtsdec', 'dv1394src', 'dvbbasebin', 'dvbsrc', 'dvbsuboverlay', 'dvddemux', 'dvdec', 'dvdemux', 'dvdlpcmdec', 'dvdreadsrc', 'dvdspu', 'dvdsubdec', 'dvdsubparse', 'dynudpsink', 'edgetv', 'efence', 'encodebin', 'equalizer-10bands', 'equalizer-3bands', 'equalizer-nbands', 'exclusion', 'faad', 'faceoverlay', 'fakesink', 'fakesrc', 'fbdevsink', 'fdsink', 'fdsrc', 'festival', 'ffmpegcolorspace', 'fieldanalysis', 'filesink', 'filesrc', 'fisheye', 'flacdec', 'flacenc', 'flacparse', 'flactag', 'flitetestsrc', 'flvdemux', 'flvmux', 'flxdec', 'fpsdisplaysink', 'freeverb', 'freeze', 'funnel', 'gamma', 'gaussianblur', 'gconfaudiosink', 'gconfaudiosrc', 'gconfvideosink', 'gconfvideosrc', 'gdkpixbufdec', 'gdkpixbufscale', 'gdkpixbufsink', 'gdpdepay', 'gdppay', 'giosink', 'giosrc', 'giostreamsink', 'giostreamsrc', 'gmedec', 'gnomevfssink', 'gnomevfssrc', 'goom', 'goom2k1', 'gppmux', 'gsettingsaudiosink', 'gsettingsaudiosrc', 'gsettingsvideosink', 'gsettingsvideosrc', 'gsmdec', 'gsmenc', 'gstrtpbin', 'gstrtpjitterbuffer', 'gstrtpptdemux', 'gstrtpsession', 'gstrtpssrcdemux', 'h263parse', 'h264parse', 'hdv1394src', 'hdvparse', 'hlsdemux', 'icydemux', 'id3demux', 'id3mux', 'id3v2mux', 'identity', 'imagefreeze', 'input-selector', 'interaudiosink', 'interaudiosrc', 'interlace', 'interleave', 'intervideosink', 'intervideosrc', 'irtspparse', 'ismlmux', 'ivfparse', 'jackaudiosink', 'jackaudiosrc', 'jifmux', 'jp2kdec', 'jp2kdecimator', 'jp2kenc', 'jpegdec', 'jpegenc', 'jpegparse', 'kaleidoscope', 'katedec', 'kateenc', 'kateparse', 'katetag', 'lame', 'lamemp3enc', 'legacyh264parse', 'legacympegvideoparse', 'legacyresample', 'level', 'libvisual_bumpscope', 'libvisual_corona', 'libvisual_infinite', 'libvisual_jakdaw', 'libvisual_jess', 'libvisual_lv_analyzer', 'libvisual_lv_scope', 'libvisual_oinksie', 'linsyssdisink', 'linsyssdisrc', 'liveadder', 'mad', 'marble', 'matroskademux', 'matroskamux', 'matroskaparse', 'measurecollector', 'mimdec', 'mimenc', 'mirror', 'mj2mux', 'mmssrc', 'modplug', 'monoscope', 'mp3parse', 'mp4mux', 'mpeg2dec', 'mpeg4videoparse', 'mpegaudioparse', 'mpegdemux', 'mpegparse', 'mpegpsdemux', 'mpegpsmux', 'mpegtsdemux', 'mpegtsmux', 'mpegtsparse', 'mpegvideoparse', 'mulawdec', 'mulawenc', 'multifdsink', 'multifilesink', 'multifilesrc', 'multipartdemux', 'multipartmux', 'multiqueue', 'multiudpsink', 'musepackdec', 'mvedemux', 'mvemux', 'mxfdemux', 'mxfmux', 'navigationtest', 'navseek', 'nsfdec', 'nuvdemux', 'ofa', 'oggaviparse', 'oggdemux', 'oggmux', 'oggparse', 'ogmaudioparse', 'ogmtextparse', 'ogmvideoparse', 'openalsink', 'openalsrc', 'optv', 'opusdec', 'opusenc', 'opusparse', 'oss4mixer', 'oss4sink', 'oss4src', 'ossmixer', 'osssink', 'osssrc', 'output-selector', 'patchdetect', 'pcapparse', 'pinch', 'pipeline', 'pitch', 'playbin', 'playbin2', 'playsink', 'pngdec', 'pngenc', 'pnmdec', 'pnmenc', 'pnmsrc', 'progressreport', 'pulseaudiosink', 'pulsemixer', 'pulsesink', 'pulsesrc', 'pushfilesrc', 'qtdemux', 'qtmoovrecover', 'qtmux', 'quarktv', 'queue', 'queue2', 'rademux', 'radioactv', 'rdtdepay', 'rdtmanager', 'removesilence', 'revtv', 'rfbsrc', 'rganalysis', 'rgb2bayer', 'rglimiter', 'rgvolume', 'rippletv', 'rmdemux', 'rndbuffersize', 'rotate', 'rsndvdbin', 'rsvgdec', 'rsvgoverlay', 'rtmpsink', 'rtmpsrc', 'rtpL16depay', 'rtpL16pay', 'rtpac3depay', 'rtpac3pay', 'rtpamrdepay', 'rtpamrpay', 'rtpasfdepay', 'rtpasfpay', 'rtpbvdepay', 'rtpbvpay', 'rtpceltdepay', 'rtpceltpay', 'rtpdec', 'rtpdepay', 'rtpdtmfdepay', 'rtpdtmfmux', 'rtpdtmfsrc', 'rtpdvdepay', 'rtpdvpay', 'rtpg722depay', 'rtpg722pay', 'rtpg723depay', 'rtpg723pay', 'rtpg726depay', 'rtpg726pay', 'rtpg729depay', 'rtpg729pay', 'rtpgsmdepay', 'rtpgsmpay', 'rtpgstdepay', 'rtpgstpay', 'rtph263depay', 'rtph263pay', 'rtph263pdepay', 'rtph263ppay', 'rtph264depay', 'rtph264pay', 'rtpilbcdepay', 'rtpilbcpay', 'rtpj2kdepay', 'rtpj2kpay', 'rtpjpegdepay', 'rtpjpegpay', 'rtpmp1sdepay', 'rtpmp2tdepay', 'rtpmp2tpay', 'rtpmp4adepay', 'rtpmp4apay', 'rtpmp4gdepay', 'rtpmp4gpay', 'rtpmp4vdepay', 'rtpmp4vpay', 'rtpmpadepay', 'rtpmpapay', 'rtpmparobustdepay', 'rtpmpvdepay', 'rtpmpvpay', 'rtpmux', 'rtpopusdepay', 'rtpopuspay', 'rtppcmadepay', 'rtppcmapay', 'rtppcmudepay', 'rtppcmupay', 'rtpqcelpdepay', 'rtpqdm2depay', 'rtpsirendepay', 'rtpsirenpay', 'rtpspeexdepay', 'rtpspeexpay', 'rtpsv3vdepay', 'rtptheoradepay', 'rtptheorapay', 'rtpvorbisdepay', 'rtpvorbispay', 'rtpvp8depay', 'rtpvp8pay', 'rtpvrawdepay', 'rtpvrawpay', 'rtpxqtdepay', 'rtspreal', 'rtspsrc', 'rtspwms', 'scaletempo', 'scenechange', 'schrodec', 'schroenc', 'sdidemux', 'sdimux', 'sdpdemux', 'sfsink', 'sfsrc', 'shagadelictv', 'shapewipe', 'shmsink', 'shmsrc', 'shout2send', 'siddec', 'sirendec', 'sirenenc', 'smokedec', 'smokeenc', 'smooth', 'smpte', 'smptealpha', 'solarize', 'souphttpclientsink', 'souphttpsrc', 'spacescope', 'spanplc', 'spectrascope', 'spectrum', 'speed', 'speexdec', 'speexenc', 'sphere', 'splitfilesrc', 'square', 'srtenc', 'ssaparse', 'ssim', 'stereo', 'streaktv', 'stretch', 'subparse', 'subtitleoverlay', 'synaescope', 'taginject', 'tcpclientsink', 'tcpclientsrc', 'tcpserversink', 'tcpserversrc', 'tee', 'teletextdec', 'testsink', 'textoverlay', 'textrender', 'theoradec', 'theoraenc', 'theoraparse', 'timeoverlay', 'tsdemux', 'tsparse', 'ttadec', 'ttaparse', 'tunnel', 'twirl', 'twolame', 'typefind', 'udpsink', 'udpsrc', 'uridecodebin', 'v4l2radio', 'v4l2sink', 'v4l2src', 'valve', 'vcdparse', 'vcdsrc', 'vertigotv', 'videoanalyse', 'videobalance', 'videobox', 'videocrop', 'videodetect', 'videoflip', 'videomark', 'videomaxrate', 'videomixer', 'videomixer2', 'videoparse', 'videorate', 'videoscale', 'videosegmentclip', 'videotestsrc', 'viewfinderbin', 'vmncdec', 'voaacenc', 'voamrwbenc', 'volume', 'vorbisdec', 'vorbisenc', 'vorbisparse', 'vorbistag', 'vp8dec', 'vp8enc', 'warptv', 'waterripple', 'wavenc', 'wavescope', 'wavpackdec', 'wavpackenc', 'wavpackparse', 'wavparse', 'webmmux', 'webvttenc', 'wildmidi', 'wrappercamerabinsrc', 'x264enc', 'ximagesink', 'ximagesrc', 'xingmux', 'xviddec', 'xvidenc', 'xvimagesink', 'y4mdec', 'y4menc', 'zbar', 'zebrastripe'] 2015-11-22 21:40:15,708 initialized CODECS: 2015-11-22 21:40:15,708 * mp3 : ('lamemp3enc', None, 'mad', 'mp3parse') 2015-11-22 21:40:15,708 * wavpack : ('wavpackenc', None, 'wavpackdec', 'wavpackparse') 2015-11-22 21:40:15,708 * flac : ('flacenc', 'oggmux', 'flacdec', 'oggdemux') 2015-11-22 21:40:15,708 * wav : ('wavenc', None, None, 'wavparse') 2015-11-22 21:40:15,708 * speex : ('speexenc', 'oggmux', 'speexdec', 'oggdemux') 2015-11-22 21:40:15,708 speaker_allowed=True, speaker_codecs=['mp3', 'wavpack', 'flac', 'wav', 'speex'] 2015-11-22 21:40:15,709 microphone_allowed=True, microphone_codecs=['mp3', 'wavpack', 'flac', 'wav', 'speex'] 2015-11-22 21:40:15,709 csc_swscale.init_module() 2015-11-22 21:40:15,710 csc_cython.init_module() 2015-11-22 21:40:15,710 dec_avcodec2.init_module() 2015-11-22 21:40:15,710 vpx.decoder.init_module() info={'version': u'v1.4.0', 'vp8.colorspaces': ['YUV420P'], 'abi_version': 9, 'encodings': ['vp8', 'vp9'], 'build_config': '--prefix=/usr --enable-pic --enable-shared --disable-install-bins --disable-install-srcs --size-limit=16384x16384 --enable-postproc --enable-multi-res-encoding --enable-temporal-denoising --enable-vp9-temporal-denoising --enable-vp9-postproc --target=x86_64-linux-gcc', 'vp9.colorspaces': ['YUV420P', 'YUV444P']} 2015-11-22 21:40:15,710 supported codecs: ['vp8', 'vp9'] 2015-11-22 21:40:15,710 supported colorspaces: {'vp9': ['YUV420P', 'YUV444P'], 'vp8': ['YUV420P']} 2015-11-22 21:40:15,710 init(..) ClientWindowClass=<class 'xpra.client.gtk2.border_client_window.BorderClientWindow'> 2015-11-22 21:40:15,710 init_opengl(None) 2015-11-22 21:40:15,711 init_opengl: going to import xpra.client.gl 2015-11-22 21:40:15,787 init_opengl: gl_check=<module 'xpra.client.gl.gl_check' from '/usr/lib/python2.7/dist-packages/xpra/client/gl/gl_check.pyc'> 2015-11-22 21:40:15,844 GL props={'has_alpha': True, 'gtkglext.version': (1, 2, 0), 'pygdkglext.version': (1, 1, 0), 'gdkgl.version': (1, 4), 'gdkglext.version': (1, 2, 0), 'rgba': True, 'display_mode': ['ALPHA', 'SINGLE'], 'glconfig': <gtk.gdkgl.Config object at 0x7f487c04dd20 (GdkGLConfigImplX11 at 0x2a7f300)>} Segmentation fault
@amitar: this call should never fail: we're just querying the GL driver version.
Sounds like your system's libraries are messed up. We do have code to detect the driver and library versions in use, so that we can blacklist problematic ones. But it doesn't even get that far.
So I will probably close this as notabug.
Not heard back, closing. Feel free to re-open if you can provide more information.
this ticket has been moved to: https://github.com/Xpra-org/xpra/issues/1039