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Bugzilla – Full Text Bug Listing |
| Summary: | Xvnc segfaults when using gdm (Xvnc started by xinetd) | ||
|---|---|---|---|
| Product: | [openSUSE] openSUSE 11.0 | Reporter: | Eric Ward <eward> |
| Component: | X.Org | Assignee: | Stefan Dirsch <sndirsch> |
| Status: | RESOLVED FIXED | QA Contact: | E-mail List <xorg-maintainer-bugs> |
| Severity: | Major | ||
| Priority: | P2 - High | CC: | federico, forgotten_U3w37yBkwc, max, vodicka.petr |
| Version: | Factory | ||
| Target Milestone: | --- | ||
| Hardware: | i586 | ||
| OS: | Other | ||
| Whiteboard: | |||
| Found By: | --- | Services Priority: | |
| Business Priority: | Blocker: | --- | |
| Marketing QA Status: | --- | IT Deployment: | --- |
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Description
Eric Ward
2008-05-01 17:25:41 UTC
I can't get Xvnc to start via xinetd at all, although it seems to be registered. # nmap -P0 -p 5900-5905 shannon Starting Nmap 4.20 ( http://insecure.org ) at 2008-05-01 19:51 CEST Interesting ports on shannon (10.10.0.79): PORT STATE SERVICE 5900/tcp filtered vnc 5901/tcp open vnc-1 5902/tcp filtered vnc-2 5903/tcp filtered vnc-3 5904/tcp filtered unknown 5905/tcp filtered unknown Nmap finished: 1 IP address (1 host up) scanned in 11.346 seconds Reinhard, does this work for you? Eric, which architecture is this? I'm seeing this on both i586 and x86_64 openSUSE 11.0 beta1 systems. Reinhard? Starting Xvnc via xinetd (vncviewer localhost:1) works fine for me on 11.0 Beta1. But instead of a [xkg]dm login screen I only get the regular X server startup background with the right half distorted by horizontal stripes. When I move the vncviewer window around for a little while, it suddenly exits saying "VNC server closed connection", but I get no segfault reported in /var/log/messages or /var/log/xinetd . (In reply to comment #7 from Reinhard Max) > Starting Xvnc via xinetd (vncviewer localhost:1) works fine for me on 11.0 > Beta1. > > But instead of a [xkg]dm login screen I only get the regular X server startup > background Same for me. > with the right half distorted by horizontal stripes. I cannot reproduce this. > When I move the vncviewer window around for a little while, it suddenly exits > saying "VNC server closed connection", but I get no segfault reported in > /var/log/messages or /var/log/xinetd. Same for me. Maybe this is a timeout, because no Xclient connects. Ok. We both didn't run a displaymanager. Therefore we got the X background. After starting gdm I see the Sig11 in /var/log/messages as well. May 5 10:39:18 e33 klogd: Xvnc[17757]: segfault at 0 ip 45b691 sp 7fff29a4e460 error 4 in Xvnc[400000+3ea000] The segfault does not happen with kdm(3)/xdm. Program received signal SIGSEGV, Segmentation fault.
rfbSpritePictureOverlap (pPict=0xb6e9a0, x=0, y=0, w=28, h=28) at sprite.c:2020
2020 if (pPict->pDrawable->type == DRAWABLE_WINDOW)
(gdb) bt
#0 rfbSpritePictureOverlap (pPict=0xb6e9a0, x=0, y=0, w=28, h=28)
at sprite.c:2020
#1 0x000000000045b9b4 in rfbSpriteComposite (op=1 '\001', pSrc=0xb6e9a0,
pMask=0xb6ea80, pDst=0xb6eb60, xSrc=<value optimized out>,
ySrc=<value optimized out>, xMask=0, yMask=0, xDst=0, yDst=0,
width=<value optimized out>, height=<value optimized out>) at sprite.c:2065
#2 0x00000000006d35fa in ProcRenderComposite (client=0xb56a00) at render.c:758
#3 0x0000000000478d22 in Dispatch () at dispatch.c:502
#4 0x000000000048c215 in main (argc=10, argv=0x7fffd1ecb118,
envp=<value optimized out>) at main.c:452
(gdb)
Probably related to broken RENDER support in Xvnc.
I disabled RENDER support in Xvnc now, which fixes this issue. Fixed for Beta3. But this causes another bug, see bug #390011. Hmm, but this fixes the symptom, not the cause. What's the actual bug in Xvnc that makes it crash? Should we reopen this so that we can keep track of the actual crasher? I have no clue. Do you volunteer to debug Xvnc? xorg-x11.changes: ------------------------------------------------------------------- Wed May 14 18:19:15 CEST 2008 - sndirsch@suse.de - disabled patch to disable RENDER support in Xvnc, since it broke 24bit color depth support (bnc #390011) ==> REOPEN *** Bug 390468 has been marked as a duplicate of this bug. *** *** Bug 390478 has been marked as a duplicate of this bug. *** (In reply to comment #16 from Stefan Dirsch) > I have no clue. Do you volunteer to debug Xvnc? I won't have time to do that any time soon, sorry :) If the "disable RENDER" hack works and clients can deal with that, I guess it's okay to leave the bug as fixed. You are a lot more familiar than myself with the upstream bugs.freedesktop.org for xorg --- do you know if there's a bug there about this? We can just reference it from here and leave *our* bug as LATER or something. Unfortunately the "disable RENDER" hack breaks 24 color depth, so this is no longer an option. :-( fixed for RC1/Factory/XOrg:X11 # rpm --changelog -q xorg-x11-server ------------------------------------------------------------------- Fri May 16 12:15:57 CEST 2008 - sndirsch@suse.de - xorg-server-1.4-vnc-render_sig11.diff * fixed sig11 in RENDER code (bnc #385677) *** Bug 390169 has been marked as a duplicate of this bug. *** *** Bug 390169 has been marked as a duplicate of this bug. *** |