I am originating from a Ubuntu 21.10 system to a Debian Bullet system,
but now I can't get X-forwarding to work from any site I connect to when
originating from Ubuntu 21.10.
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On Mon, 8 Nov 2021, Paride Legovini wrote:
> Date: Mon, 08 Nov 2021 15:43:10 -0000
> From: Paride Legovini <[email protected]>
> To: [email protected]
> Subject: [Bug 1949535] Re: X-forwarding no longer works
>
> Hello Robert and thanks for your bug report. You wrote:
>
>> I recently upgraded my debian shell server to Bullet
>
> but I'm not sure I get what you mean. Is it a Debian system or an Ubuntu
> system? If it's upgrading a Debian system that broke your setup then
> there's nothing I can see that points to a bug in Ubuntu. Moreover: what
> is Bullet? Did you mean Bullseye or Bookworm?
>
> If you think there's actually a bug in Ubuntu here please share more of
> your reasoning, possibly providing a reproducer, e.g. by ssh -X to a
> container or VM. I'm marking this bug report as Incomplete for the
> moment. Feel free to change it back to New after commenting back.
> Thanks!
>
> ** Changed in: openssh (Ubuntu)
> Status: New => Incomplete
>
> --
> You received this bug notification because you are subscribed to the bug
> report.
> https://bugs.launchpad.net/bugs/1949535
>
> Title:
> X-forwarding no longer works
>
> Status in openssh package in Ubuntu:
> Incomplete
>
> Bug description:
> I operate a Linux based Internet hosting service that includes Linux
> shell servers of various flavors. I control these from home using
> Ubuntu 21.10 presently. Until recently, X-forwarding has worked from
> all but ancient Redhat 6.2 servers. I recently upgraded my debian
> shell server to Bullet, and after the upgrade ssh -X debian.eskimo.com
> from my workstation nanook.eskimo.com ceased to function. It simply
> says "Cannot open DISPLAY". At the time, all the others continued to
> work. Today, when I went to do upgrades, now ssh -X is forwarding
> across the board to all flavors of Linux. I did an ssh -V, nothing
> obvious wrong in the connection.
>
> debug1: Authentications that can continue: publickey,password
> debug1: Next authentication method: publickey
> debug1: Offering public key: /home/nanook/.ssh/id_rsa RSA
> SHA256:a5bReJXl7L91eGOuCYugHsY2rn2a0WTDXEBTC93YdmA agent
> debug1: Server accepts key: /home/nanook/.ssh/id_rsa RSA
> SHA256:a5bReJXl7L91eGOuCYugHsY2rn2a0WTDXEBTC93YdmA agent
> debug1: Authentication succeeded (publickey).
> Authenticated to igloo.eskimo.com ([204.122.16.128]:22).
> debug1: channel 0: new [client-session]
> debug1: Requesting [email protected]
> debug1: Entering interactive session.
> debug1: pledge: network
> debug1: client_input_global_request: rtype [email protected]
> want_reply 0
> debug1: Remote: /home/nanook/.ssh/authorized_keys:1: key options:
> agent-forwarding port-forwarding pty user-rc x11-forwarding
> debug1: Remote: /home/nanook/.ssh/authorized_keys:1: key options:
> agent-forwarding port-forwarding pty user-rc x11-forwarding
> debug1: Sending environment.
> debug1: Sending env LANG = en_US.UTF-8
> debug1: client_input_channel_req: channel 0 rtype exit-status reply 0
> debug1: client_input_channel_req: channel 0 rtype [email protected] reply 0
> debug1: channel 0: free: client-session, nchannels 1
> debug1: fd 2 clearing O_NONBLOCK
> Connection to igloo.eskimo.com closed.
> Transferred: sent 3748, received 3820 bytes, in 6.4 seconds
> Bytes per second: sent 589.4, received 600.8
>
> I don't see anything obviously wrong here but still it does not work, I get:
> xclock
> Error: Can't open display:
>
> ProblemType: Bug
> DistroRelease: Ubuntu 21.10
> Package: ssh (not installed)
> Uname: Linux 5.13.19 x86_64
> ApportVersion: 2.20.11-0ubuntu71
> Architecture: amd64
> CasperMD5CheckResult: unknown
> CurrentDesktop: MATE
> Date: Tue Nov 2 17:31:14 2021
> SourcePackage: openssh
> UpgradeStatus: No upgrade log present (probably fresh install)
>
> To manage notifications about this bug go to:
> https://bugs.launchpad.net/ubuntu/+source/openssh/+bug/1949535/+subscriptions
>
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https://bugs.launchpad.net/bugs/1949535
Title:
X-forwarding no longer works
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