kdm.log:

klauncher(2891) kdemain: No DBUS session-bus found. Check if you have started the DBUS server. 
kdeinit4: Communication error with launcher. Exiting!
kdmgreet(2881)/kdecore (K*TimeZone*): KSystemTimeZones: ktimezoned initialize() D-Bus call failed:  "Not connected to D-Bus server" 

The XKEYBOARD keymap compiler (xkbcomp) reports:
> Warning:          Type "ONE_LEVEL" has 1 levels, but <RALT> has 2 symbols
>                   Ignoring extra symbols
Errors from xkbcomp are not fatal to the X server

PKGBUILD:

msg "revert upstream patches ..."
patch -Np1 -R < ${srcdir}/rev_dont_rebase_special_time_0_against_monotonic_clock.patch
patch -Np1 -R < ${srcdir}/rev_rebase_shutdown_times_against_real_time_when_querying_them.patch
patch -Np1 -R < ${srcdir}/rev_fix_shutdown_timeouts_with_monotonic_clock.patch
patch -Np1 -R < ${srcdir}/rev_cleaner_restart_logic_for_crashing_greeter.patch
patch -Np1 -R < ${srcdir}/rev_session.c_update_now.patch
patch -Np1 -R < ${srcdir}/rev_be_posix-compliant_about_monotonic_clock_detection.patch
patch -Np1 -R < ${srcdir}/rev_monotonic_clock.patch

Patches to revert:

http://chakra-project.org/sources/kde-workspace/rev_dont_rebase_special_time_0_against_monotonic_clock.patch
http://chakra-project.org/sources/kde-workspace/rev_rebase_shutdown_times_against_real_time_when_querying_them.patch
http://chakra-project.org/sources/kde-workspace/rev_fix_shutdown_timeouts_with_monotonic_clock.patch
http://chakra-project.org/sources/kde-workspace/rev_cleaner_restart_logic_for_crashing_greeter.patch
http://chakra-project.org/sources/kde-workspace/rev_session.c_update_now.patch
http://chakra-project.org/sources/kde-workspace/rev_be_posix-compliant_about_monotonic_clock_detection.patch
http://chakra-project.org/sources/kde-workspace/rev_monotonic_clock.patch

Build log:

  -> Found rev_dont_rebase_special_time_0_against_monotonic_clock.patch
  -> Found rev_rebase_shutdown_times_against_real_time_when_querying_them.patch
  -> Found rev_fix_shutdown_timeouts_with_monotonic_clock.patch
  -> Found rev_cleaner_restart_logic_for_crashing_greeter.patch
  -> Found rev_session.c_update_now.patch
  -> Found rev_be_posix-compliant_about_monotonic_clock_detection.patch
  -> Found rev_monotonic_clock.patch
==> Validating source files with md5sums...
    rev_dont_rebase_special_time_0_against_monotonic_clock.patch ... Passed
    rev_rebase_shutdown_times_against_real_time_when_querying_them.patch ... Passed
    rev_fix_shutdown_timeouts_with_monotonic_clock.patch ... Passed
    rev_cleaner_restart_logic_for_crashing_greeter.patch ... Passed
    rev_session.c_update_now.patch ... Passed
    rev_be_posix-compliant_about_monotonic_clock_detection.patch ... Passed
    rev_monotonic_clock.patch ... Passed
==> revert upstream patches ...
patching file kdm/backend/ctrl.c
Hunk #1 succeeded at 650 (offset 1 line).
Hunk #2 succeeded at 666 (offset 1 line).
patching file kdm/backend/ctrl.c
patching file kdm/backend/ctrl.c
patching file kdm/backend/greet.h
patching file kdm/backend/session.c
patching file kdm/kfrontend/kgapp.cpp
patching file kdm/kfrontend/kgapp.h
patching file kdm/backend/session.c
patching file kdm/backend/dm.c
patching file kdm/backend/dm.h
patching file kdm/backend/CMakeLists.txt
patching file kdm/backend/dm.c
patching file kdm/backend/dm.h
patching file kdm/backend/session.c