TC4.2: Xorg-7.6-3d makes Firefox explode

[Raschid]

TC has breathed new life into my aging Acer Aspire One 110L.
Thank you to everyone involved in the project!

My Problem: Since I went from Xorg7.6 to Xorg7.6-3d, Firefox explodes (Blank screen, frozen mouse pointer)
OS/WM: CorePlus4.2 + FLWM classic
Machine: Acer Aspire One A110L
Xorg.conf - Video driver section:
   Section "Device"
      Identifier  "Card0"
      Driver      "intel"
      VendorName  "Intel Corporation"
      BoardName   "Mobile 915GM/GMS/910GML Express Graphics Controller"
      BusID       "PCI:0:2:0"
   EndSection
Xorg DRI-Driver: i915 (i915_dri.so)

Other applications - e.g. VLC, Chromium, ... work just fine.

Any ideas/comments/tips would be very welcome!

Cheers,
   Raschid

[martin]

How you tried the "use hardware acceleration when available" setting? Perhaps unchecking it if it is ticked or vice versa?

[Raschid]

Thank you for your replay, markerr. Where would I find that setting?

[martin]

Edit menu -> Preferences -> Advanced -> General. Under Browsing heading.

[Raschid]

No can do. Firefox freezes right after startup.

[coreplayer2]

Interesting...
Am not sure if this will help, however why not temporarily disable Xorg7.6-3d to disable the checkbox. 
Was thinking maybe the CLI option " firefox -safe-mode " might help temporarily.. unfortunately on my system it did not.  maybe there is a CLI switch to disable it..?

[Raschid]

Hi coreplayer2, thank you for your suggestion.

disabled Xorg7.6-3d, rebooted => Firefox works again. Yay.
Unchecked the "use hardware accel" option as markerr suggested, reenabled Xorg7.6-3d (reboot) and ...
... Firefox freezes again on start.
Firefox and Xorg7.6-3d remain mutually exclusive on my system.

[bmarkus]

The beauty is that you have so many browsers to choosem, you are not binded to one.

[Raschid]

Indeed. Chromium is working fine.
Unfortunately Firefox does not seem to be the only program affected: Looking for programms utilizing graphics acceleration I just checked "pinball.tcz": Similar problem (this one dies on exit).

[coreplayer2]

So the issue is likely with Xorg7.6-3d not FF ?

[Raschid]

Yes, I would think so too.
vlc works fine. FF dies on start. pinball dies on exit.
I have puppy linux on another partition of the same machine => graphics accel works fine. So I would rule out hardware issues.

[Raschid]

There does not seem any readily apparent solution for this problem.

Additional Xorg.conf options I tried unsuccessfully (as info for anyone with similar issues):

1. in Section "Device" / Identifier "Card0" / Driver "intel"
   Option     "NoAcces"        "true"             # does not help here, firefox/pinball/etc. still freeze
   Option     "Legacy3D"      "false"            # apparently a known issue with the intel driver, does not help here
   Option     "Tiling"              "no"               # apparently a known issue with the intel driver, does not help here
   Option      "MigrationHeuristic"   "greedy"    # solved issues with some cards, does not help here

2. in Section "Module" / Load "extmod"
    SubSection      "extmod"
       Option          "omit xfree86-dga"
    EndSubSection
       # KNOPPIX say about this: This is okay, but if you look into "man xorg.conf" you'll find option NOT to include DGA extension with extmod, and for a good reason.. DGA causes instability as it accesses videoram without consulting X about it.

3. removing Option "Composite" in Section "Extensions", known to cause issues with some gaphics cards,  does not help either.

[makoto]

I have the same problem. If I use Xorg-7.6-3d, then firefox and thunderbird cannot work, the screen goes black, the mouse can't move and I cannot even get to console. If I use Xorg-7.6 instead, everything goes fine. I think it may be the driver problem. I have Lenovo ThinkPad E420 with intel/ATI switchable graphics. However, I can only use the integrated intel graphics so far. I tried the ati-fglrx and the driver given by amd, but both cannot work, just give "failed in waitforX". I don't have xorg.conf in /etc/X11 unless I use the ati driver. After deleting xorg.conf, I can start X, but the driver isn't working. I don't know how to configure. Sorry for my poor English.