New: x11r7 X11 S40xorg leads to a black screen on QEMU x86 but startx works

https://bugs.busybox.net/show_bug.cgi?id=11066

Bug ID: 11066
Summary: x11r7 X11 S40xorg leads to a black screen on QEMU x86
but startx works
Product: buildroot
Version: 2018.02.1
Hardware: All
OS: Linux
Status: NEW
Severity: normal
Priority: P5
Component: Other
Assignee: unassigned at buildroot.uclibc.org
Reporter: ciro.santilli at gmail.com
CC: buildroot at uclibc.org
Target Milestone: ---

I was on 2017.08 happily doing starx manually, when I rebased to 77c47c3ff8601da2fdc8f82f84be117dd636b02c (post 2018.05) and noticed that X11 was starting automatically due to S40xorg d83eacaaa8f17b5d573d540ca6338390fcfa0ba1

Unfortunately, the screen is then black.

However, if I manually remove S40xorg and go back to my startx method, it still works (except the mouse doesn't move, as before, do you have a clue about that as well?)

My precise setup is:
https://github.com/cirosantilli/buildroot/tree/77c47c3ff8601da2fdc8f82f84be117dd636b02c
which does for build:

#!/usr/bin/env bash
unset LD_LIBRARY_PATH
defconfig="${1:-qemu_x86_64_defconfig}"
outdir="output/${defconfig}"
make O="$outdir" "$defconfig"
printf "
BR2_CCACHE=y
BR2_PACKAGE_HOST_QEMU=y
BR2_PACKAGE_HOST_QEMU_LINUX_USER_MODE=n
BR2_PACKAGE_HOST_QEMU_SYSTEM_MODE=y
BR2_PACKAGE_HOST_QEMU_VDE2=y

BR2_PACKAGE_XAPP_TWM=y
BR2_PACKAGE_XAPP_XCALC=y
BR2_PACKAGE_XAPP_XCLOCK=y
BR2_PACKAGE_XAPP_XEYES=y
BR2_PACKAGE_XAPP_XINIT=y BR2_PACKAGE_XDRIVER_XF86_INPUT_KEYBOARD=y BR2_PACKAGE_XDRIVER_XF86_INPUT_MOUSE=y BR2_PACKAGE_XDRIVER_XF86_VIDEO_CIRRUS=y BR2_PACKAGE_XDRIVER_XF86_VIDEO_FBDEV=y BR2_PACKAGE_XDRIVER_XF86_VIDEO_VESA=y
BR2_PACKAGE_XORG7=y
BR2_PACKAGE_XSERVER_XORG_SERVER=y
BR2_PACKAGE_XTERM=y
BR2_TOOLCHAIN_BUILDROOT_CXX=y BR2_TOOLCHAIN_BUILDROOT_WCHAR=y
${2:-}
" >> "${outdir}/.config"
make O="$outdir" olddefconfig
time make O="$outdir" BR2_JLEVEL="$(nproc)" HOST_QEMU_OPTS='--enable-sdl --with-sdlabi=2.0'

run:

#!/usr/bin/env bash outdir="${1:-output/qemu_x86_64_defconfig}" "${outdir}/host/usr/bin/qemu-system-x86_64" \
-M pc \
-append 'root=/dev/vda console=ttyS0' \
-drive file="${outdir}/images/rootfs.ext2,if=virtio,format=raw" \
-enable-kvm \
-kernel "${outdir}/images/bzImage" \
-m 512 \
-net nic,model=virtio \
-net user,hostfwd=tcp::2222-:22 \
-serial mon:stdio \
;

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Ciro Santilli <[email protected]> changed:

What |Removed |Added
----------------------------------------------------------------------------
CC| |bernd.kuhls at t-online.de

--- Comment #1 from Ciro Santilli <[email protected]> --- If I manually do

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--- Comment #2 from Ciro Santilli <[email protected]> --- If I manually do the command that S40xorg would be doing after removing it, i.e.:

/usr/bin/Xorg:0.0 vt01 -s 0 -noreset -allowMouseOpenFail

the screen also goes black.

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Thomas Petazzoni <[email protected]> changed:

What |Removed |Added
----------------------------------------------------------------------------
Assignee|unassigned at buildroot.uclibc |bernd.kuhls at t-online.de
|.org |

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David De Grave <[email protected]> changed:

What |Removed |Added
----------------------------------------------------------------------------
Version|2018.02.1 |unspecified

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Yann E. MORIN <[email protected]> changed:

What |Removed |Added
----------------------------------------------------------------------------

             Status|NEW                         |RESOLVED
         Resolution|---                         |INVALID
                 CC|                            |yann.morin.1998 at free.fr

--- Comment #3 from Yann E. MORIN <[email protected]> --- Ciro, All,

startx usually starts the X server, then a initial X client.

S40xorg only starts the server; it is up to you to provide a later script that starts the X client you're interested in.

Regards,
Yann E. MORIN.

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