Here's from a session from Brasero: Checking session consistency (brasero_burn_check_session_consistency brasero-burn.c:1739) BraseroBurnURI called brasero_job_get_action BraseroBurnURI called brasero_job_get_action BraseroBurnURI called brasero_job_set_output_size_for_current_track BraseroBurnURI stopping BraseroBurnURI called brasero_job_get_action BraseroBurnURI called brasero_job_get_session_output_size BraseroBurnURI output set (IMAGE) image = /tmp/brasero_tmp_6THECZ.bin toc = none BraseroBurnURI called brasero_job_get_session_output_size BraseroBurnURI called brasero_job_get_action BraseroBurnURI called brasero_job_get_current_track BraseroBurnURI no burn:// URI found BraseroBurnURI stopping BraseroLocalTrack called brasero_job_get_action BraseroLocalTrack called brasero_job_get_action BraseroLocalTrack called brasero_job_set_output_size_for_current_track BraseroLocalTrack stopping BraseroLocalTrack called brasero_job_get_action BraseroLocalTrack called brasero_job_get_session_output_size BraseroLocalTrack output set (IMAGE) image = /tmp/brasero_tmp_OHSECZ.bin toc = none BraseroLocalTrack called brasero_job_get_session_output_size BraseroLocalTrack called brasero_job_get_action BraseroLocalTrack called brasero_job_get_current_track BraseroLocalTrack no remote URIs BraseroLocalTrack stopping BraseroChecksumImage called brasero_job_get_current_track BraseroChecksumImage called brasero_job_get_action BraseroChecksumImage called brasero_job_get_flags BraseroChecksumImage called brasero_job_get_action BraseroChecksumImage called brasero_job_get_action BraseroChecksumImage called brasero_job_get_fd_in BraseroChecksumImage called brasero_job_set_output_size_for_current_track BraseroChecksumImage stopping BraseroChecksumImage called brasero_job_get_current_track BraseroChecksumImage called brasero_job_get_action BraseroChecksumImage called brasero_job_get_flags BraseroChecksumImage called brasero_job_get_action BraseroChecksumImage called brasero_job_get_session_output_size BraseroChecksumImage output set (IMAGE) image = /tmp/brasero_tmp_2ZRECZ.bin toc = none BraseroChecksumImage called brasero_job_get_session_output_size BraseroChecksumImage called brasero_job_get_action BraseroChecksumImage called brasero_job_get_action BraseroChecksumImage called brasero_job_get_current_track BraseroChecksumImage called brasero_job_get_input_type BraseroChecksumImage called brasero_job_set_current_action BraseroChecksumImage called brasero_job_get_fd_in BraseroChecksumImage called brasero_job_get_current_track BraseroChecksumImage called brasero_job_get_current_track BraseroChecksumImage Starting checksuming file /home/edward/Downloads/ubuntustudio-17.10-dvd-amd64.iso (size = 2868903936) BraseroChecksumImage called brasero_job_get_fd_out BraseroChecksumImage called brasero_job_get_current_track BraseroChecksumImage Setting new checksum (type = 2) cad497d4a880c6486a0f3e74c5314c55 ((null) before) BraseroChecksumImage Finished track successfully BraseroChecksumImage stopping BraseroGrowisofs called brasero_job_get_action BraseroGrowisofs getting varg BraseroGrowisofs called brasero_job_get_action BraseroGrowisofs called brasero_job_get_current_track BraseroGrowisofs got varg: BraseroGrowisofs deactivating BraseroGrowisofs called brasero_job_get_action BraseroGrowisofs getting varg BraseroGrowisofs called brasero_job_get_action BraseroGrowisofs called brasero_job_get_flags BraseroGrowisofs called brasero_job_get_speed BraseroGrowisofs called brasero_job_get_device BraseroGrowisofs called brasero_job_get_action BraseroGrowisofs called brasero_job_get_session_output_size BraseroGrowisofs called brasero_job_get_current_track BraseroGrowisofs called brasero_job_get_fd_in BraseroGrowisofs called brasero_job_set_current_action BraseroGrowisofs got varg: growisofs -use-the-force-luke=notray -use-the-force-luke=4gms -dvd-compat -speed=8 -use-the-force-luke=tracksize:1400832 -use-the-force-luke=tty -Z /dev/sr0=/home/edward/Downloads/ubuntustudio-17.10-dvd-amd64.iso BraseroGrowisofs Launching command BraseroGrowisofs called brasero_job_get_fd_out BraseroGrowisofs called brasero_job_get_fd_in BraseroGrowisofs called brasero_job_get_fd_out BraseroGrowisofs stdout: Executing 'builtin_dd if=/home/edward/Downloads/ubuntustudio-17.10-dvd-amd64.iso of=/dev/sr0 obs=32k seek=0' BraseroGrowisofs called brasero_job_set_dangerous BraseroGrowisofs stderr: :-? more than 50% of space will be *wasted*! BraseroGrowisofs stderr: /dev/sr0: splitting layers at 700416 blocks BraseroGrowisofs stderr: :-[ SEND DVD+R DOUBLE LAYER RECORDING INFORMATION failed with SK=5h/ASC=21h/ACQ=04h]: Invalid argument BraseroGrowisofs stdout: HUP BraseroGrowisofs stderr: HUP BraseroGrowisofs process finished with status 150 BraseroGrowisofs called brasero_job_error BraseroGrowisofs finished with an error BraseroGrowisofs asked to stop because of an error error = 0 message = "no message" BraseroGrowisofs stopping Session error : unknown (brasero_burn_record brasero-burn.c:2859)