Ошибка переноса apt-get обновления

Question 1

Я использую Ubuntu 17.10 (хитрый). После того, как я обновился с 17.04, мое обновление apt-get перестало работать. Я уже установил libstdc ++ 6 (32-разрядный и 64-разрядный), и его зависимости, как и другие сообщения для Ubuntu 16, предлагают. Я переустановил libgnutls30.

Это результат обновления apt-get:

root@adam-desktop:~/Downloads# apt-get update
/usr/lib/apt/methods/http: relocation error: /usr/lib/apt/methods/http: symbol gnutls_session_set_verify_cert, version GNUTLS_3_4 not defined in file libgnutls.so.30 with link time reference
/usr/lib/apt/methods/http: relocation error: /usr/lib/apt/methods/http: symbol gnutls_session_set_verify_cert, version GNUTLS_3_4 not defined in file libgnutls.so.30 with link time reference
/usr/lib/apt/methods/http: relocation error: /usr/lib/apt/methods/http: symbol gnutls_session_set_verify_cert, version GNUTLS_3_4 not defined in file libgnutls.so.30 with link time reference
/usr/lib/apt/methods/http: relocation error: /usr/lib/apt/methods/http: symbol gnutls_session_set_verify_cert, version GNUTLS_3_4 not defined in file libgnutls.so.30 with link time reference
/usr/lib/apt/methods/http: relocation error: /usr/lib/apt/methods/http: symbol gnutls_session_set_verify_cert, version GNUTLS_3_4 not defined in file libgnutls.so.30 with link time reference
Reading package lists... Done
E: Method http has died unexpectedly!
E: Sub-process http returned an error code (127)
E: Method /usr/lib/apt/methods/http did not start correctly
E: Method http has died unexpectedly!
E: Sub-process http returned an error code (127)
E: Method /usr/lib/apt/methods/http did not start correctly
E: Method http has died unexpectedly!
E: Sub-process http returned an error code (127)
E: Method /usr/lib/apt/methods/http did not start correctly
E: Method http has died unexpectedly!
E: Sub-process http returned an error code (127)
E: Method /usr/lib/apt/methods/http did not start correctly
E: Method http has died unexpectedly!
E: Sub-process http returned an error code (127)
E: Method /usr/lib/apt/methods/http did not start correctly
E: Failed to fetch http://us.archive.ubuntu.com/ubuntu/dists/artful/InRelease  
E: Failed to fetch http://us.archive.ubuntu.com/ubuntu/dists/artful-security/InRelease  
E: Failed to fetch http://us.archive.ubuntu.com/ubuntu/dists/artful-updates/InRelease  
E: Failed to fetch http://dl.google.com/linux/chrome/deb/dists/stable/InRelease  
E: Failed to fetch http://ppa.launchpad.net/ubuntu-toolchain-r/test/ubuntu/dists/artful/InRelease  
E: Some index files failed to download. They have been ignored, or old ones used instead.

Question 2