Upgrading PHP from 5.4.16 to 7.2.34 also fixed this problem for me.
Steps I used to upgrade PHP on CentOS-7 here https://www.ezeelogin.com/kb/article/ho ... s-282.html
Search found 2 matches
- Mon Jun 13, 2022 4:37 pm
- Forum: ZoneMinder 1.36.x
- Topic: after upgrading to 1.36.17, blank video in montage, and web_php "Unable to get semaphore." in log
- Replies: 22
- Views: 11510
- Mon Jun 13, 2022 3:59 pm
- Forum: ZoneMinder 1.36.x
- Topic: after upgrading to 1.36.17, blank video in montage, and web_php "Unable to get semaphore." in log
- Replies: 22
- Views: 11510
Re: after upgrading to 1.36.17, blank video in montage, and web_php "Unable to get semaphore." in log
On my CentOS-7 based install, with PHP-5.4.16 the PHP function sem_acquire supports only 1 parameter but 2 are given so call fails BUT something hides the error log about it. I edited /usr/share/zoneminder/www/ajax/stream.php on line 22, patch to version from zoneminder-1.36.17 --- /usr/share ...