[nvidia] X segfaults after login in Dispatch+0x1cb due to "ttf-arabeyes" font

[Martin Emrich]

Binary package hint: xorg

(Feisty,amd64,nvidia)

After login, I just see the GNOME splash screen "Nautilus...", then the X server crashed and I'm back to textmode. From Xorg.0.log:

Backtrace:
0: /usr/X11R6/bin/X(xf86SigHandler+0x6d) [0x4827fd]
1: /lib/libc.so.6 [0x2b8514aa2d40]
2: /usr/X11R6/bin/X [0x4fdf57]
3: /usr/X11R6/bin/X(Dispatch+0x1cb) [0x44df4b]
4: /usr/X11R6/bin/X(main+0x45d) [0x43703d]
5: /lib/libc.so.6(__libc_start_main+0xf4) [0x2b8514a8f8e4]
6: /usr/X11R6/bin/X(FontFileCompleteXLFD+0x241) [0x436339]

Fatal server error:
Caught signal 11. Server aborting

[Martin Emrich (emme)]

I saw this in the changelog.Debian:

    - Re-add 126_debian_always_use_default_font_path.diff. This was dropped
      by Debian but needed by us since we still have legacy fontpaths in
      old configurations, so new paths need to be appended to the list.

So I grabbed the source package, removed this patch, rebuilt and reinstalled xserver-xorg-core. After that, my X works again.

[Timo Aaltonen (tjaalton)]

err, I don't see how that could be related... That patch only makes the server to always check the fontpaths specified with '--with-default-font-path'.

[Martin Emrich (emme)]

Some possibilities I see:

1. In the logfile, it says "Could not init font path element /usr/X11R6/lib/ X11/fonts/Type1, removing from list!". The spaces between ...lib/ and X11... are also in the debian/rules file, maybe they disturb X.

2. in one of these paths, there is something that does not get along with X and GNOME (Starting X alone without GNOME, it worked all the time). As I now have removed this option, I'll now try to add all the default paths one by one to my xorg.conf and see what happens...

[Martin Emrich (emme)]

Ok, I did some further tests. I nailed it down to this directory:

/var/lib/defoma/x-ttcidfont-conf.d/dirs/TrueType

When I enter it into my xorg.conf, X crashes, If I comment it out, my X works normally. So I started removing truetype font packages one by one, and luckily, already the first one worked:

After removing "ttf-arabeyes", my X works even with this directory listed in my config.

So either one of the fonts in ttf-arabeyes causes my X server to crash, or the sum of all fonts including them is too big or too many for X to handle (buffer overflow?). From this point, I actually don't know how to track down the bug further. Some "irregularities" I observed with this font package:

- Three dead symlinks:
ae_AlMohannad.ttf: No such file or directory
ae_AlYermok.ttf: No such file or directory
ae_Mash_bold.ttf: No such file or directory

- While installing, I get some (error?) messages:
martin@garrett:/var/lib/defoma/x-ttcidfont-conf.d/dirs/TrueType$ sudo apt-get install ttf-arabeyes
...
Entpacke ttf-arabeyes (aus .../ttf-arabeyes_1.1-6_all.deb) ...
Richte ttf-arabeyes ein (1.1-6) ...
No CIDSupplement specified for KochiMincho-Regular-JaH, defaulting to 0.
No CIDSupplement specified for Batang-Regular, defaulting to 0.
No CIDSupplement specified for Gulim-Regular, defaulting to 0.
No CIDSupplement specified for KochiMincho-Regular, defaulting to 0.
No CIDSupplement specified for Dotum-Regular, defaulting to 0.
No CIDSupplement specified for KochiGothic-Regular, defaulting to 0.
No CIDSupplement specified for KochiGothic-Regular-JaH, defaulting to 0.
No CIDSupplement specified for Headline-Regular, defaulting to 0.

[Guillaume ZITTA (zitta-guillaume)]

Hi, I have the same PB with Beryl

Launching beryl, X crashes with:

Could not init font path element /usr/X11R6/lib/X11/fonts/misc, removing from list!
Could not init font path element /usr/share/fonts/X11/cyrillic, removing from list!
Could not init font path element /usr/X11R6/lib/X11/fonts/Type1, removing from list!
(II) NVIDIA(0): v4l: memPhysBase=0xe0000000

Backtrace:
0: /usr/bin/X(xf86SigHandler+0x6d) [0x48282d]
1: /lib/libc.so.6 [0x2b5149440d40]
2: /usr/bin/X(Dispatch+0x120) [0x44dea0]
3: /usr/bin/X(main+0x45d) [0x43703d]
4: /lib/libc.so.6(__libc_start_main+0xf4) [0x2b514942d8e4]
5: /usr/bin/X(FontFileCompleteXLFD+0x241) [0x436339]

Fatal server error:
Caught signal 11. Server aborting

[Bryce Harrington (bryce)]

Might be related to bug 71913 or bug 60288, which have similar backtraces

[Jani Averbach (jaa-jaa-iki)]

I have similar backtrace, with few differences:
- I happens if I log out, not when I log in
- If I remove /var/lib/defoma/x-ttcidfont-conf.d/dirs/TrueType config line from xorg.conf, it doesn't make any difference

temporary fix:
I added TerminateServer=true to my /etc/kde3/kdm/kdmrc file, and that fixed the problem for now.

Also, if you are stuck with blank screen with blinking cursor, kill kdm by hitting
CTRL-ALT-SysRq-K (all the same time), then you will see SysRq: SAK on your virtual terminal,
and after that you can switch to VT1 and restart X.

This is a stock installation of Kubuntu Feisty with normal updates.
01:00.0 VGA compatible controller: S3 Inc. SuperSavage IX/C SDR (rev 05)

Backtrace:
0: /usr/bin/X(xf86SigHandler+0x81) [0x80c5d91]
1: [0xffffe420]
2: /usr/lib/xorg/modules//libramdac.so(xf86SetCursor+0x10a) [0xafa297ca]
3: /usr/lib/xorg/modules//libramdac.so [0xafa28e35]
4: /usr/bin/X(miPointerUpdate+0x164) [0x811a4e4]
5: /usr/bin/X [0x811a5f9]
6: /usr/bin/X [0x8132a3e]
7: /usr/bin/X [0x8156557]
8: /usr/bin/X(DefineInitialRootWindow+0x12b) [0x8094e3b]
9: /usr/bin/X(main+0x45a) [0x807474a]
10: /lib/tls/i686/cmov/libc.so.6(__libc_start_main+0xdc) [0xb7dcbebc]
11: /usr/bin/X(FontFileCompleteXLFD+0x1e1) [0x8073ab1]

Fatal server error:
Caught signal 11. Server aborting

[LagartoFlojo (lagartoflojo)]

This happens to me in Ubuntu Feisty, but only with the new Intel graphics driver (package xserver-xorg-video-intel).
It does not happen with the old driver (xserver-xorg-video-i810).

I have removed the ttf-arabeyes package and nothing happened.
I have also commented out the pertinent "font path elements" from xorg.conf, but as you can see below, it still tries to initialize them.

00:02.0 VGA compatible controller: Intel Corporation Mobile 915GM/GMS/910GML Express Graphics Controller (rev 04)

gdm log:
======================
Could not init font path element /usr/X11R6/lib/X11/fonts/misc, removing from list!
Could not init font path element /usr/share/fonts/X11/cyrillic, removing from list!
Could not init font path element /usr/X11R6/lib/X11/fonts/Type1, removing from list!

Backtrace:
0: /usr/X11R6/bin/X(xf86SigHandler+0x81) [0x80c5d91]
1: [0xffffe420]
2: /usr/lib/xorg/modules/drivers//i810_drv.so(intel_xf86CrtcSetMode+0x59) [0xb7b90fc9]
3: /usr/lib/xorg/modules/drivers//i810_drv.so(intel_xf86SetSingleMode+0x11a) [0xb7b913da]
4: /usr/lib/xorg/modules/drivers//i810_drv.so [0xb7b722a0]
5: /usr/lib/xorg/modules//libramdac.so [0xb7a2cb38]
6: /usr/X11R6/bin/X [0x80cdff3]
7: /usr/X11R6/bin/X(xf86SwitchMode+0xce) [0x80c2d0e]
8: /usr/lib/xorg/modules/drivers//i810_drv.so(intel_xf86RandR12SetConfig+0x20c) [0xb7b939bc]
9: /usr/X11R6/bin/X [0x8159466]
10: /usr/X11R6/bin/X [0x81424ce]
11: /usr/X11R6/bin/X(Dispatch+0x19f) [0x808c61f]
12: /usr/X11R6/bin/X(main+0x495) [0x8074785]
13: /lib/tls/i686/cmov/libc.so.6(__libc_start_main+0xdc) [0xb7d44ebc]
14: /usr/X11R6/bin/X(FontFileCompleteXLFD+0x1e1) [0x8073ab1]

Fatal server error:
Caught signal 11. Server aborting
========================

[Timo Aaltonen (tjaalton)]

Can any of you reproduce this with 7.10 or Hardy?

[Martin Emrich (emme)]

Hi!

I am sorry, but I now have an AMD onboard graphics card, so I cannot test it anymore.

Ciao

Martin

[LagartoFlojo (lagartoflojo)]

The problem as I reported it has been solved in Gutsy (same hardware).

[Timo Aaltonen (tjaalton)]

Ok, I'll close the bug as fixed, thanks!