can't start calibre ubuntu 16.04

[slanian]

hi

first, I am not super literate in either ubuntu or calibre so if this issue has been solved already in this forum and I missed it, my apologies.

i can't start calibre in ubuntu 16.04
i 've been using its basing functions for more than a year now.
it just stopped launching yesterday.

i desinstalled it and installed from the calibre web page.
with no success.

i typed

calibre-debug -c "from calibre.constants import plugins; print plugins['_regex'][0].get_properties().keys()"

as requested by kovidgoyal here:
https://www.mobileread.com/forums/sho...d.php?t=276690

and here's the result:

['CWU', 'CWT', 'WSPACE', 'LINEBREAK', 'XIDCONTINUE', 'OTHERDEFAULTIGNORABLECODEPOINT', 'CWCM', 'NCHAR', 'SENTENCEBREAK', 'GC', 'CWCF', 'CHANGESWHENCASEMAPPED', 'CWL', 'TERMINALPUNCTUATION', 'IDSB', 'HST', 'WB', 'UNIFIEDIDEOGRAPH', 'BIDICONTROL', 'TERM', 'HANGULSYLLABLETYPE', 'UIDEO', 'OGREXT', 'OTHERUPPERCASE', 'DT', 'PATSYN', 'OLOWER', 'DIA', 'CHANGESWHENUPPERCASED', 'DI', 'RADICAL', 'NUMERICTYPE', 'EXT', 'XDIGIT', 'OIDC', 'HEX', 'GRAPHEMEEXTEND', 'CHANGESWHENTITLECASED', 'UPPERCASE', 'BLANK', 'GRAPHEMECLUSTERBREAK', 'DEPRECATED', 'OIDS', 'INDICPOSITIONALCATEGORY', 'DASH', 'WORD', 'SCRIPT', 'PATWS', 'EA', 'CANONICALCOMBININGCLASS', 'OTHERMATH', 'JOINCONTROL', 'OMATH', 'WORDBREAK', 'JT', 'HEXDIGIT', 'OTHERIDCONTINUE', 'OTHERALPHABETIC', 'GRBASE', 'JG', 'JOINC', 'UPPER', 'SOFTDOTTED', 'DECOMPOSITIONTYPE', 'IDEO', 'POSIXALNUM', 'ANY', 'LOWER', 'BC', 'LB', 'CCC', 'GRLINK', 'INDICSYLLABICCATEGORY', 'STERM', 'IDSBINARYOPERATOR', 'GCB', 'OALPHA', 'HYPHEN', 'ALPHABETIC', 'IDEOGRAPHIC', 'EASTASIANWIDTH', 'LOGICALORDEREXCEPTION', 'PRINT', 'CI', 'SENTENCETERMINAL', 'IDC', 'SD', 'SC', 'SB', 'XIDC', 'IDST', 'LOE', 'IDS', 'XIDS', 'IDSTRINARYOPERATOR', 'PATTERNWHITESPACE', 'DIACRITIC', 'WHITESPACE', 'ODI', 'CASED', 'INSC', 'PCM', 'JOININGTYPE', 'XIDSTART', 'DEP', 'GRAPHEMELINK', 'NONCHARACTERCODEPOINT', 'BIDICLASS', 'EXTENDER', 'BLOCK', 'GRAPH', 'OTHERGRAPHEMEEXTEND', 'VARIATIONSELECTOR', 'MATH', 'JOININGGROUP', 'LOWERCASE', 'ALPHA', 'INPC', 'QUOTATIONMARK', 'ALPHANUMERIC', 'NUMERICVALUE', 'PATTERNSYNTAX', 'CHANGESWHENLOWERCASED', 'BIDIC', 'BIDIMIRRORED', 'CASEIGNORABLE', 'BIDIM', 'GRAPHEMEBASE', 'SPACE', 'BLK', 'NT', 'NV', 'POSIXXDIGIT', 'IDSTART', 'QMARK', 'CHANGESWHENCASEFOLDED', 'GREXT', 'GENERALCATEGORY', 'ASCIIHEXDIGIT', 'POSIXPUNCT', 'AHEX', 'ALNUM', 'OTHERIDSTART', 'OTHERLOWERCASE', 'POSIXDIGIT', 'OUPPER', 'PREPENDEDCONCATENATIONMARK', 'IDCONTINUE', 'VS', 'DEFAULTIGNORABLECODEPOINT']

Can anyone help?

thank you

[kovidgoyal]

Post the output of running

calibre-debug -g

[slanian]

here's the result

calibre 2.68  embedded-python: True is64bit: False
Linux-4.4.0-35-generic-i686-athlon-with-debian-stretch-sid Linux ('32bit', 'ELF')
('Linux', '4.4.0-35-generic', '#54-Ubuntu SMP Tue Aug 9 17:03:17 UTC 2016')
Python 2.7.9
Linux: ('debian', 'stretch/sid', '')
devicePixelRatio: 1.0
logicalDpi: 96.0 x 96.0
physicalDpi: 81.5518394649 x 81.6428571429

thank you

[kovidgoyal]

Dont see any errors there. Are you sure the calibre window is not opening minimized or on a secondary monitor? Are the calibre and calibre_parallel processes running

ps aux | grep calibre

after starting calibre.

[slanian]

hi
it started today.
i don't understand how and why.
here's the result of the command you asked, in case it helps you for future reference.

al        4449 14.5  9.0 340528 162664 ?       Dsl  17:43   0:15 /opt/calibre/bin/calibre --detach
al        4493  1.2  1.8  61896 33832 ?        S    17:44   0:01 /opt/calibre/bin/calibre-parallel --pipe-worker from calibre.utils.ipc.pool import run_main, worker_main; run_main(worker_main)
al        4505  7.3  1.8  61436 33544 ?        S    17:45   0:00 /opt/calibre/bin/calibre-parallel --pipe-worker from calibre.utils.ipc.pool import run_main, worker_main; run_main(worker_main)
al        4515  0.0  0.0   5128   756 pts/1    S+   17:45   0:00 grep calibre

thank you