sddm:: disable plasma-wayland

[Adrian Sevcenco <Adrian.Sevcenco@xxxxxxx>]

Hi! After the latest update the SDDM starts
/usr/bin/startplasma-wayland
and then this is started
/usr/bin/kwin_wayland_wrapper --xwayland

with the effect of having 2.5 load on a 8 core Ryzen7 and having 70 degrees on CPU!!!

root@hal: ~ # ps faxu | grep kwin
adrian      5392  0.0  0.0 154180 17588 ?        Ssl  19:02   0:00  \_ /usr/bin/kwin_wayland_wrapper --xwayland
adrian      5399 78.8  0.4 2207524 300152 ?      Sl   19:02   8:05  |   \_ /usr/bin/kwin_wayland --wayland-fd 7 --socket 
wayland-0 --xwayland-fd 8 --xwayland-fd 9 --xwayland-display :1 --xwayland-xauthority /run/user/1000/xauth_qWgUvu --xwayland

strace shows something like:
poll([{fd=71, events=POLLIN|POLLOUT}], 1, -1) = 1 ([{fd=71, revents=POLLIN|POLLOUT}])
recvmsg(71, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\27\0<\335\21\0 
\0\3\0\340\0\0\0\0\0\0\0\0\0\274\2\360\1\0\0\f\0\0\0\0\0", iov_len=4096}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 
0) = 32
writev(71, [{iov_base="\31\1\v\0\3\0\340\0\0\0\2\0\26\0\0\0\3\0\340\0\3\0\340\0\0\0\0\0B\7\256\3"..., iov_len=44}], 1) = 44
poll([{fd=71, events=POLLIN|POLLOUT}], 1, -1) = 1 ([{fd=71, revents=POLLIN|POLLOUT}])
recvmsg(71, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\27\0=\335\21\0 
\0\3\0\340\0\0\0\0\0\0\0\0\0\274\2\360\1\0\0\f\0\0\0\0\0", iov_len=4096}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 
0) = 32
writev(71, [{iov_base="\31\1\v\0\3\0\340\0\0\0\2\0\26\0\0\0\3\0\340\0\3\0\340\0\0\0\0\0B\7\256\3"..., iov_len=44}], 1) = 44
poll([{fd=71, events=POLLIN|POLLOUT}], 1, -1) = 1 ([{fd=71, revents=POLLIN|POLLOUT}])
recvmsg(71, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\27\0>\335\21\0 
\0\3\0\340\0\0\0\0\0\0\0\0\0\274\2\360\1\0\0\f\0\0\0\0\0", iov_len=4096}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 
0) = 32
writev(71, [{iov_base="\31\1\v\0\3\0\340\0\0\0\2\0\26\0\0\0\3\0\340\0\3\0\340\0\0\0\0\0B\7\256\3"..., iov_len=44}], 1) = 44
poll([{fd=71, events=POLLIN|POLLOUT}], 1, -1) = 1 ([{fd=71, revents=POLLIN|POLLOUT}])
recvmsg(71, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\27\0?\335\21\0 
\0\3\0\340\0\0\0\0\0\0\0\0\0\274\2\360\1\0\0\f\0\0\0\0\0", iov_len=4096}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 
0) = 32
writev(71, [{iov_base="\31\1\v\0\3\0\340\0\0\0\2\0\26\0\0\0\3\0\340\0\3\0\340\0\0\0\0\0B\7\256\3"..., iov_len=44}], 1) = 44
poll([{fd=71, events=POLLIN|POLLOUT}], 1, -1) = 1 ([{fd=71, revents=POLLOUT}])
writev(71, [{iov_base="\31\1\v\0\3\0\340\0\0\0\2\0\26\0\0\0\3\0\340\0\3\0\340\0\0\0\0\0B\7\256\3"..., iov_len=44}], 1) = 44
recvmsg(71, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\27\0@\335\21\0 
\0\3\0\340\0\0\0\0\0\0\0\0\0\274\2\360\1\0\0\f\0\0\0\0\0", iov_len=4096}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 
0) = 32
poll([{fd=71, events=POLLIN|POLLOUT}], 1, -1) = 1 ([{fd=71, revents=POLLOUT}])
writev(71, [{iov_base="\31\1\v\0\3\0\340\0\0\0\2\0\26\0\0\0\3\0\340\0\3\0\340\0\0\0\0\0B\7\256\3"..., iov_len=44}], 1) = 44
recvmsg(71, {msg_namelen=0}, 0)         = -1 EAGAIN (Resource temporarily unavailable)
sendmsg(182, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\32\0\0\0\3\0\30\0*\10\0\0Y|\n\0.\0\0\0\1\0\0\0", 
iov_len=24}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, MSG_DONTWAIT|MSG_NOSIGNAL) = 24
ppoll([{fd=21, events=POLLIN}, {fd=62, events=POLLIN}, {fd=15, events=POLLIN}, {fd=83, events=POLLIN}, {fd=20, 
events=POLLIN}, {fd=87, events=POLLIN}, {fd=41, events=POLLIN}, {fd=71, events=POLLIN}, {fd=36, events=POLLIN}, {fd=66, 
events=POLLIN}, {fd=13, events=POLLIN}, {fd=40, events=POLLIN}, {fd=11, events=POLLIN}], 13, {tv_sec=0, 
tv_nsec=569998610}, NULL, 8) = 4 ([{fd=21, revents=POLLIN}, {fd=15, revents=POLLIN}, {fd=71, revents=POLLIN}, {fd=11, 
revents=POLLIN}], left {tv_sec=0, tv_nsec=569994110})

Any idea how can i return the the old, good and efficient Xorg?
N.B. that xorg is started anyway:
root@hal: ~ # pgrep -a Xorg
4952 /usr/libexec/Xorg -nolisten tcp +iglx -background none -seat seat0 vt2 -auth /run/sddm/xauth_PCdQZB -noreset 
-displayfd 15

Thank you!
Adrian

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