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#1 2018-06-23 21:36:22

Amphitryon
Member
Registered: 2018-06-23
Posts: 1

GDM Fails to start

On my old Toshiba NB100, if I select gdm as the display manager it never gets as far as presenting the list of users - instead there is a blank screen with the cursor at the top left and the mouse pointer towards the bottom right.  The mouse pointer does not move with movements on the trackpad and tappings keys have no effect.  Even Ctrl-Alt-F3 etc. to switch to another virtual console have no effect.  The only way to do anything with the machine is via ssh.

If I install lightdm and start that instead it works fine.

As far as I can tell the difference is that gdm will try to use wayland and lightdm uses x.org.  Looking into the logs when gdm is trying to start I see some things that don't look right:

Jun 23 22:02:19 alfroid org.gnome.Shell.desktop[480]: Require OpenGL version 2.1 or later.
Jun 23 22:02:19 alfroid org.gnome.Shell.desktop[480]: Failed to initialize glamor
Jun 23 22:02:19 alfroid org.gnome.Shell.desktop[480]: Failed to initialize glamor, falling back to sw
Jun 23 22:02:20 alfroid org.gnome.Shell.desktop[480]: The XKEYBOARD keymap compiler (xkbcomp) reports:
Jun 23 22:02:20 alfroid org.gnome.Shell.desktop[480]: > Internal error:   Could not resolve keysym XF86WWAN
Jun 23 22:02:20 alfroid org.gnome.Shell.desktop[480]: > Internal error:   Could not resolve keysym XF86RFKill
Jun 23 22:02:20 alfroid org.gnome.Shell.desktop[480]: Errors from xkbcomp are not fatal to the X server

then later on:

Jun 23 22:02:25 alfroid gnome-shell[480]: Failed to launch ibus-daemon: Failed to execute child process “ibus-daemon” (No suc>

Jun 23 22:02:37 alfroid gnome-shell[480]: Failed to create new back buffer handle: No such file or directory

I am not sure from this if this is a missing package or driver.  It has intel integrated graphics but is quite old.  lspci -v gives:

00:02.0 VGA compatible controller: Intel Corporation Mobile 945GSE Express Integrated Graphics Controller (rev 03) (prog-if 00 [VGA controller])
        Subsystem: Toshiba America Info Systems Mobile 945GSE Express Integrated Graphics Controller
        Flags: bus master, fast devsel, latency 0, IRQ 17
        Memory at 94280000 (32-bit, non-prefetchable) [size=512K]
        I/O ports at 40f0 [size=8]
        Memory at 80000000 (32-bit, prefetchable) [size=256M]
        Memory at 94300000 (32-bit, non-prefetchable) [size=256K]
        [virtual] Expansion ROM at 000c0000 [disabled] [size=128K]
        Capabilities: [90] MSI: Enable- Count=1/1 Maskable- 64bit-
        Capabilities: [d0] Power Management version 2
        Kernel driver in use: i915
        Kernel modules: i915

Any idea what to look at, please?

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#2 2018-06-25 10:15:52

andreas_baumann
Administrator
From: Zurich, Switzerland
Registered: 2017-08-10
Posts: 510
Website

Re: GDM Fails to start

Mmh. I would use the xf86-video-intel driver for now.
I had some issues when using xorg with modesetting only, as it needs
OpenGL support ("Require OpenGL version 2.1 or later.") and I fear this
is due to a too old DRM support for the Intel drivers.

That said, if anyone knows a solution, I'm glad to hear about. :-)

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