Несколько мониторов: монитор не включается

Эти зеркала работают с HTTPS с действительными сертификатами

https://ftp.lysator.liu.se/ubuntu/
https://mirrors.bloomu.edu/ubuntu/
https://mirrors.cs.wmich.edu/ubuntu/

Все они работают с HTTPS, но имеют недопустимые сертификаты

https://mirrors.coopvgg.com.ar/ubuntu/
https://ubuntu.xfree.com.ar/ubuntu/
https://ftp.ccc.uba.ar/pub/linux/ubuntu/
https://ubuntu.unc.edu.ar/ubuntu/
https://mirror.aarnet.edu.au/pub/ubuntu/archive/
https://ftp.iinet.net.au/pub/ubuntu/
https://mirror.internode.on.net/pub/ubuntu/ubuntu/
https://mirror.overthewire.com.au/ubuntu/
https://ubuntu.mirror.uber.com.au/archive/
https://gd.tuwien.ac.at/opsys/linux/ubuntu/archive/
https://mirror.dhakacom.com/ubuntu/
https://ftp.byfly.by/ubuntu/
https://mirror.datacenter.by/ubuntu/
https://ftp.belnet.be/ubuntu.com/ubuntu/
https://gaosu.rave.org/ubuntu/
https://ubuntu.mirrors.skynet.be/ubuntu/
https://ubuntu.mirrors.skynet.be/pub/ubuntu.com/ubuntu/
https://archive.ubuntu.com.ba/ubuntu/
https://mirror.globo.com/ubuntu/archive/
https://ubuntu.ufba.br/ubuntu/
https://espelhos.edugraf.ufsc.br/ubuntu/
https://mirror.unesp.br/ubuntu/
https://sft.if.usp.br/ubuntu/
https://www.las.ic.unicamp.br/pub/ubuntu/
https://mirror.its.sfu.ca/mirror/ubuntu/
https://mirror.cpsc.ucalgary.ca/mirror/ubuntu.com/packages/
https://ubuntu.skarta.net/ubuntu/
https://ftp.iitm.ac.in/ubuntu/
https://biruni.upm.my/mirror/ubuntu/
https://cesium.di.uminho.pt/pub/ubuntu-archive/
https://ftp.rnl.ist.utl.pt/pub/ubuntu/archive/
https://free.nchc.org.tw/ubuntu/
https://mirror.umd.edu/ubuntu/
https://mirror.uoregon.edu/ubuntu/
https://www.club.cc.cmu.edu/pub/ubuntu/
https://mirror.clarkson.edu/ubuntu/
https://mirror.vcu.edu/pub/gnu+linux/ubuntu/