[Bug 546632] New: VNC remote administration does not work.
http://bugzilla.novell.com/show_bug.cgi?id=546632 Summary: VNC remote administration does not work. Classification: openSUSE Product: openSUSE 11.2 Version: Milestone 8 Platform: Other OS/Version: Other Status: NEW Severity: Major Priority: P5 - None Component: X.Org AssignedTo: bnc-team-xorg-bugs@forge.provo.novell.com ReportedBy: nice@titanic.nyme.hu QAContact: xorg-maintainer-bugs@forge.provo.novell.com Found By: --- User-Agent: Mozilla/5.0 (X11; U; Linux x86_64; hu-HU; rv:1.9.1.3) Gecko/20090909 SUSE/3.5.3-2.1 Firefox/3.5.3 I enabled remote graphical login in the local security section of KDE, and additionally enable remote administration in the network services section, but when I connect by vncclient to loclhost's 5901th port, I get a black screen with a default X shaped X.org cursor. Moreover, the nework services section is unable to open the firewall ports, because network interfaces aren't assigned to any firewall zone initially. I either have to open VPN ports manually in the firewall section of YaST, or I have to assign the ports before trying to open VPN ports from the network services section of YaST. Reproducible: Always -- Configure bugmail: http://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.
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User sndirsch@novell.com added comment
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Stefan Dirsch
when I connect by vncclient to localhost's 5901th port, I get a black screen with a default X shaped X.org cursor.
So Xvnc works fine. Reassigning. -- Configure bugmail: http://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.
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Stefan Dirsch
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User nice@titanic.nyme.hu added comment
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--- Comment #2 from Tamás Németh
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Tamás Németh
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--- Comment #4 from Tamás Németh
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Reinhard Max
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--- Comment #6 from Stefan Dirsch
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--- Comment #7 from Ian Cheong
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--- Comment #8 from Ian Cheong
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Ian Cheong
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User max@novell.com added comment
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--- Comment #10 from Reinhard Max
1. YaST/Gnome in 11.2RC1 has no "Graphics and monitor" control panel, so no way to set up dual display mode using gui. I thought it should be set up to use mirroring.
Please open a new bug report for this. For the rest of your comments: It looks like you are confusing two different mechanisms that only have in common that both are using the vnc protocol: * The first is called remote administration and can be enabled in YaST. When you connect to it, you get a login screen from xdm, kdm or gdm, which leads to a new session that is unrelated to any sessions that might exist on the local display. That's what this bug report is about. * The other one is that with KDE and Gnome you can export the currently running session through vnc. That's what the screenshot from your first attachment is about. Please open a new bug report if you find issues in this area. I think your port confusion comes from the fact that you enabled both mechanisms at the same time, so remote admin is listening on port 5801 and your local desktop is exported through 5802. -- Configure bugmail: http://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.
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User sndirsch@novell.com added comment
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--- Comment #11 from Stefan Dirsch
(In reply to comment #9)
1. YaST/Gnome in 11.2RC1 has no "Graphics and monitor" control panel, so no way to set up dual display mode using gui. I thought it should be set up to use mirroring.
Please open a new bug report for this.
Please do not. We won't reintroduce that. Instead use the standard tools for KDE/GNOME to configure "dual display". In any case this is a different topic than the initial one. -- Configure bugmail: http://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.
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User ian.cheong@acm.org added comment
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--- Comment #12 from Ian Cheong
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--- Comment #13 from Ian Cheong
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User max@novell.com added comment
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Reinhard Max
What of all the Xsession errors????
That's just the debugging output of the various programs you've been running during the X session (including startup). At first glance, I've not seen anything unusual in there.
If what I describe is a different topic from "VNC remote administration does not work", I suggest bug topics be refined to describe exactly what the experts think they are.
Well, the scope of a bug report is not only defined by the summary line, but also (at least) by the initial comment that describes the problem in more detail. I've now refined the summary line, and kindly ask you to limit further commands to that topic. This is not to chastise you, but to simplify your and our work. The other topics you've raised have to be handled by different people and that's easiest done by having them in separate bug reports. -- Configure bugmail: http://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.
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User sndirsch@novell.com added comment
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Stefan Dirsch
Reinhard, should we add this line for 11.2-RC2?
done. Likely fixed in RC3/final. Already in obs://X11:XOrg/xorg-x11. -- Configure bugmail: http://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.
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User nice@titanic.nyme.hu added comment
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--- Comment #16 from Tamás Németh
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--- Comment #17 from Reinhard Max
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--- Comment #18 from Stefan Dirsch
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--- Comment #19 from Tamás Németh
It looks like the workaround I described in comment #5 didn't make it into final, but you can apply it manually.
Please report back whether it works for you.
Yes, it works regardless of whether IPv6 is enabled or not. However, https://bugzilla.novell.com/show_bug.cgi?id=400520 is still an issue :(((((((( -- Configure bugmail: http://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.
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Reinhard Max
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--- Comment #21 from Christoph Bartoschek
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Reinhard Max
The bug should be renamed. One gets the impression that this has something to do with vnc. However this bug is only related to xdm and ipv6.
Indeed. Done.
Is upstream notified?
As far as I understood Stefan, there doesn't exist much of an upstream for xdm, so we'll have to look into it ourselves. -- Configure bugmail: http://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.
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--- Comment #23 from Stefan Dirsch
Is upstream notified?
As far as I understood Stefan, there doesn't exist much of an upstream for xdm, so we'll have to look into it ourselves.
Well. You could try https://bugs.freedesktop.org/enter_bug.cgi?product=xorg --> Component: App/xdm Good luck! -- Configure bugmail: http://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.
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--- Comment #24 from Christoph Bartoschek
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--- Comment #25 from Christoph Bartoschek
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--- Comment #26 from Christoph Bartoschek
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Reinhard Max
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Stefan Dirsch
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--- Comment #29 from Stefan Dirsch
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Stefan Dirsch
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--- Comment #30 from Christoph Bartoschek
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--- Comment #31 from Stefan Dirsch
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--- Comment #32 from Stefan Dirsch
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Stefan Dirsch
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Malvern Star
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--- Comment #35 from Malvern Star
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--- Comment #36 from Malvern Star
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Reinhard Max
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Malvern Star
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Malvern Star
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Stefan Dirsch
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--- Comment #40 from Stefan Dirsch
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Stefan Dirsch
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--- Comment #42 from Malvern Star
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--- Comment #43 from Stefan Dirsch
Thanks Stefan. Is this fix to be backported to 11.2?
Yes. -- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.
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Swamp Workflow Management
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Christoph Bartoschek
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Stefan Dirsch
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--- Comment #48 from Reinhard Max
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--- Comment #49 from Stefan Dirsch
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--- Comment #50 from Christoph Bartoschek
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--- Comment #51 from Stefan Dirsch
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Stefan Dirsch
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--- Comment #52 from Christoph Bartoschek
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--- Comment #53 from Reinhard Max
I do not see what the whole isssue has to do with Xvnc.
Well, this bug report here was about remote administration based on Xvnc. Only during debugging it turned out that the the problem was caused by the xdmcp client code in X.org. By posting your patches here, you proposed them as a fix to that particular problem. We tested them and found that they didn't fix the problem at hand, so we didn't use them. Also, they looked to me more like a workaround rather than a fix (one shouldn't have to hand-craft IPv4 mapped addresses), but I didn't have a closer look, because they didn't fix our problem and I wasn't aware that you meant them to fix something else.
If Xvnc cannot handle IPv6 then this is a bug in Xvnc that should be fixed. There is no reason why xdm or kdm should not get the IPv6 address.
It is not Xvnc itself, but the xdmcp implementation in the X.org server code that was using IPv6 link local addresses (FE80::/64) as display addresses. But these addresses are only meant to be used during IPv6 auto configuration and are mostly unusable for normal network communication (details available on request). That's why we changed the xdmcp client code to skip these addresses. Other types of IPv6 addresses are not affected by this change, i.e. the X server still uses them as potential display addresses when building the list for the display manager. -- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.
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--- Comment #54 from Christoph Bartoschek
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--- Comment #55 from Reinhard Max
Ok. I posted my patches only here because my original bug report: Bug #558531 was marked as duplicate of this one.
Oh - that indeed was a mistake. Sorry for that. As your bug report describes very similar symptoms and we didn't know the real reason for the Xvnc problem at that point in time, we concluded that the two bug reports are duplicates, which later turned out to be wrong, but we didn't notice. Sorry again.
Given this, I think it was wrong to mark my bug report as a duplicate
Indeed. Feel free to reopen bug #558531 and remove the duplicate flag. -- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.
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--- Comment #56 from Bernhard Wiedemann
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