Hi.

the execution of xrand -s:

Code:
# xrand -s 1024x768
Size 1024x768 not found in available modes
And the result of the other commands :

Code:
server:~ # zypper ref
Repository 'SLE-12-SP3-SAP-Updates' is up to date.
Repository 'SLE-HA12-SP3-Pool' is up to date.
Repository 'SLE-HA12-SP3-Updates' is up to date.
Repository 'SLE12-SP3-SAP-Pool' is up to date.
Repository 'SLES12-SP3-Pool' is up to date.
Retrieving repository 'SLES12-SP3-Updates' metadata ........................................................................[done]
Building repository 'SLES12-SP3-Updates' cache .............................................................................[done]
All repositories have been refreshed.
server:~ # zypper up
Refreshing service 'SUSE_Linux_Enterprise_Server_for_SAP_Applications_12_SP3_x86_64'.
Loading repository data...
Reading installed packages...

The following 4 NEW packages are going to be installed:
  kernel-default-4.4.156-94.61.1 kernel-default-devel-4.4.156-94.61.1 kernel-devel-4.4.156-94.61.1 kernel-source-4.4.156-94.61.1

The following 51 packages are going to be upgraded:
  bash bash-doc kernel-macros libMagickCore-6_Q16-1 libMagickWand-6_Q16-1 libX11-6 libX11-6-32bit libX11-data libX11-xcb1
  libX11-xcb1-32bit libatomic1 libatomic1-32bit libgcc_s1 libgcc_s1-32bit libgomp1 libgomp1-32bit libitm1 libitm1-32bit
  libreadline6 libstdc++6 libstdc++6-32bit libtsan0 libwacom-data libwacom2 libxcb-dri2-0 libxcb-dri2-0-32bit libxcb-dri3-0
  libxcb-dri3-0-32bit libxcb-glx0 libxcb-glx0-32bit libxcb-present0 libxcb-present0-32bit libxcb-randr0 libxcb-render0
  libxcb-render0-32bit libxcb-shape0 libxcb-shm0 libxcb-shm0-32bit libxcb-sync1 libxcb-sync1-32bit libxcb-xf86dri0 libxcb-xfixes0
  libxcb-xfixes0-32bit libxcb-xinerama0 libxcb-xkb1 libxcb-xv0 libxcb1 libxcb1-32bit readline-doc xorg-x11-server
  xorg-x11-server-extra

51 packages to upgrade, 4 new.
Overall download size: 2.8 MiB. Already cached: 156.7 MiB. After the operation, additional 772.0 MiB will be used.
Continue? [y/n/...? shows all options] (y): y
In cache kernel-macros-4.4.156-94.61.1.noarch.rpm                                           (1/55),   3.1 MiB (  6.3 KiB unpacked)
In cache libX11-data-1.6.2-12.5.1.noarch.rpm                                                (2/55), 158.5 KiB (  1.6 MiB unpacked)
In cache libatomic1-32bit-8.2.1+r264010-1.3.3.x86_64.rpm                                    (3/55),  15.6 KiB ( 21.4 KiB unpacked)
In cache libatomic1-8.2.1+r264010-1.3.3.x86_64.rpm                                          (4/55),  16.1 KiB ( 26.1 KiB unpacked)
In cache libgcc_s1-32bit-8.2.1+r264010-1.3.3.x86_64.rpm                                     (5/55),  52.0 KiB (109.5 KiB unpacked)
In cache libgcc_s1-8.2.1+r264010-1.3.3.x86_64.rpm                                           (6/55),  46.6 KiB ( 94.4 KiB unpacked)
In cache libgomp1-32bit-8.2.1+r264010-1.3.3.x86_64.rpm                                      (7/55),  99.9 KiB (239.5 KiB unpacked)
In cache libgomp1-8.2.1+r264010-1.3.3.x86_64.rpm                                            (8/55), 102.2 KiB (255.7 KiB unpacked)
In cache libitm1-32bit-8.2.1+r264010-1.3.3.x86_64.rpm                                       (9/55),  36.3 KiB (105.6 KiB unpacked)
In cache libitm1-8.2.1+r264010-1.3.3.x86_64.rpm                                            (10/55),  34.5 KiB (110.4 KiB unpacked)
In cache libreadline6-6.3-83.15.1.x86_64.rpm                                               (11/55), 154.5 KiB (332.6 KiB unpacked)
In cache libwacom-data-0.9-2.4.2.x86_64.rpm                                                (12/55),  34.1 KiB (225.1 KiB unpacked)
In cache libxcb1-1.10-4.3.1.x86_64.rpm                                                     (13/55),  40.2 KiB (126.9 KiB unpacked)
In cache libX11-xcb1-1.6.2-12.5.1.x86_64.rpm                                               (14/55),  15.1 KiB (  5.9 KiB unpacked)
In cache libstdc++6-32bit-8.2.1+r264010-1.3.3.x86_64.rpm                                   (15/55), 399.4 KiB (  1.5 MiB unpacked)
In cache libstdc++6-8.2.1+r264010-1.3.3.x86_64.rpm                                         (16/55), 370.1 KiB (  1.5 MiB unpacked)
In cache bash-4.3-83.15.1.x86_64.rpm                                                       (17/55), 382.9 KiB (746.5 KiB unpacked)
In cache libwacom2-0.9-2.4.2.x86_64.rpm                                                    (18/55),  21.4 KiB ( 43.0 KiB unpacked)
In cache libxcb-xv0-1.10-4.3.1.x86_64.rpm                                                  (19/55),  14.2 KiB ( 26.3 KiB unpacked)
In cache libxcb-xkb1-1.10-4.3.1.x86_64.rpm                                                 (20/55),  32.6 KiB (106.6 KiB unpacked)
In cache libxcb-xinerama0-1.10-4.3.1.x86_64.rpm                                            (21/55),  10.7 KiB ( 10.2 KiB unpacked)
In cache libxcb-xfixes0-1.10-4.3.1.x86_64.rpm                                              (22/55),  13.7 KiB ( 26.2 KiB unpacked)
In cache libxcb-xf86dri0-1.10-4.3.1.x86_64.rpm                                             (23/55),  11.6 KiB ( 18.2 KiB unpacked)
In cache libxcb-sync1-1.10-4.3.1.x86_64.rpm                                                (24/55),  13.4 KiB ( 22.2 KiB unpacked)
In cache libxcb-shm0-1.10-4.3.1.x86_64.rpm                                                 (25/55),  11.0 KiB ( 10.2 KiB unpacked)
In cache libxcb-shape0-1.10-4.3.1.x86_64.rpm                                               (26/55),  11.1 KiB ( 14.2 KiB unpacked)
In cache libxcb-render0-1.10-4.3.1.x86_64.rpm                                              (27/55),  15.9 KiB ( 38.2 KiB unpacked)
In cache libxcb-randr0-1.10-4.3.1.x86_64.rpm                                               (28/55),  18.9 KiB ( 54.4 KiB unpacked)
In cache libxcb-present0-1.10-4.3.1.x86_64.rpm                                             (29/55),  10.6 KiB ( 10.2 KiB unpacked)
In cache libxcb-glx0-1.10-4.3.1.x86_64.rpm                                                 (30/55),  24.0 KiB ( 94.2 KiB unpacked)
In cache libxcb-dri3-0-1.10-4.3.1.x86_64.rpm                                               (31/55),  10.6 KiB ( 10.2 KiB unpacked)
In cache libxcb-dri2-0-1.10-4.3.1.x86_64.rpm                                               (32/55),  11.9 KiB ( 18.2 KiB unpacked)
In cache libX11-6-1.6.2-12.5.1.x86_64.rpm                                                  (33/55), 548.0 KiB (  1.2 MiB unpacked)
In cache libtsan0-8.2.1+r264010-1.3.3.x86_64.rpm                                           (34/55), 280.9 KiB (929.1 KiB unpacked)
In cache readline-doc-6.3-83.15.1.noarch.rpm                                               (35/55), 198.1 KiB (695.6 KiB unpacked)
Retrieving package xorg-x11-server-extra-7.6_1.18.3-76.21.2.x86_64                         (36/55),   1.3 MiB (  5.4 MiB unpacked)
Retrieving delta: ./x86_64/xorg-x11-server-extra-7.6_1.18.3-76.15.2_76.21.2.x86_64.drpm, 377.2 KiB
Retrieving: xorg-x11-server-extra-7.6_1.18.3-76.15.2_76.21.2.x86_64.drpm ...................................................[done]
Applying delta: ./xorg-x11-server-extra-7.6_1.18.3-76.15.2_76.21.2.x86_64.drpm .............................................[done]
In cache libMagickCore-6_Q16-1-6.8.8.1-71.79.1.x86_64.rpm                                  (37/55),   1.6 MiB (  6.1 MiB unpacked)
In cache bash-doc-4.3-83.15.1.noarch.rpm                                                   (38/55), 531.2 KiB (  1.9 MiB unpacked)
In cache libMagickWand-6_Q16-1-6.8.8.1-71.79.1.x86_64.rpm                                  (39/55), 323.9 KiB (  1.1 MiB unpacked)
Retrieving package xorg-x11-server-7.6_1.18.3-76.21.2.x86_64                               (40/55),   1.5 MiB (  5.2 MiB unpacked)
Retrieving delta: ./x86_64/xorg-x11-server-7.6_1.18.3-76.15.2_76.21.2.x86_64.drpm, 329.5 KiB
Retrieving: xorg-x11-server-7.6_1.18.3-76.15.2_76.21.2.x86_64.drpm .........................................................[done]
Applying delta: ./xorg-x11-server-7.6_1.18.3-76.15.2_76.21.2.x86_64.drpm ...................................................[done]
In cache libxcb1-32bit-1.10-4.3.1.x86_64.rpm                                               (41/55),  42.8 KiB (137.8 KiB unpacked)
In cache libX11-xcb1-32bit-1.6.2-12.5.1.x86_64.rpm                                         (42/55),  14.9 KiB (  5.3 KiB unpacked)
In cache kernel-devel-4.4.156-94.61.1.noarch.rpm                                           (43/55),  13.5 MiB ( 52.6 MiB unpacked)
In cache kernel-default-4.4.156-94.61.1.x86_64.rpm                                         (44/55),  39.1 MiB (167.4 MiB unpacked)
In cache libxcb-xfixes0-32bit-1.10-4.3.1.x86_64.rpm                                        (45/55),  14.2 KiB ( 29.4 KiB unpacked)
In cache libxcb-sync1-32bit-1.10-4.3.1.x86_64.rpm                                          (46/55),  13.6 KiB ( 21.5 KiB unpacked)
In cache libxcb-shm0-32bit-1.10-4.3.1.x86_64.rpm                                           (47/55),  11.1 KiB (  9.4 KiB unpacked)
In cache libxcb-render0-32bit-1.10-4.3.1.x86_64.rpm                                        (48/55),  16.7 KiB ( 37.5 KiB unpacked)
In cache libxcb-present0-32bit-1.10-4.3.1.x86_64.rpm                                       (49/55),  10.6 KiB (  9.4 KiB unpacked)
In cache libxcb-glx0-32bit-1.10-4.3.1.x86_64.rpm                                           (50/55),  25.6 KiB ( 97.4 KiB unpacked)
In cache libxcb-dri3-0-32bit-1.10-4.3.1.x86_64.rpm                                         (51/55),  10.6 KiB (  9.4 KiB unpacked)
In cache libxcb-dri2-0-32bit-1.10-4.3.1.x86_64.rpm                                         (52/55),  12.2 KiB ( 17.4 KiB unpacked)
In cache libX11-6-32bit-1.6.2-12.5.1.x86_64.rpm                                            (53/55), 548.6 KiB (  1.2 MiB unpacked)
In cache kernel-source-4.4.156-94.61.1.noarch.rpm                                          (54/55),  89.5 MiB (548.6 MiB unpacked)
In cache kernel-default-devel-4.4.156-94.61.1.x86_64.rpm                                   (55/55),   5.2 MiB (  3.4 MiB unpacked)
Checking for file conflicts: ...............................................................................................[done]
( 1/55) Installing: kernel-macros-4.4.156-94.61.1.noarch ...................................................................[done]
( 2/55) Installing: libX11-data-1.6.2-12.5.1.noarch ........................................................................[done]
( 3/55) Installing: libatomic1-32bit-8.2.1+r264010-1.3.3.x86_64 ............................................................[done]
( 4/55) Installing: libatomic1-8.2.1+r264010-1.3.3.x86_64 ..................................................................[done]
( 5/55) Installing: libgcc_s1-32bit-8.2.1+r264010-1.3.3.x86_64 .............................................................[done]
( 6/55) Installing: libgcc_s1-8.2.1+r264010-1.3.3.x86_64 ...................................................................[done]
( 7/55) Installing: libgomp1-32bit-8.2.1+r264010-1.3.3.x86_64 ..............................................................[done]
( 8/55) Installing: libgomp1-8.2.1+r264010-1.3.3.x86_64 ....................................................................[done]
( 9/55) Installing: libitm1-32bit-8.2.1+r264010-1.3.3.x86_64 ...............................................................[done]
(10/55) Installing: libitm1-8.2.1+r264010-1.3.3.x86_64 .....................................................................[done]
(11/55) Installing: libreadline6-6.3-83.15.1.x86_64 ........................................................................[done]
(12/55) Installing: libwacom-data-0.9-2.4.2.x86_64 .........................................................................[done]
(13/55) Installing: libxcb1-1.10-4.3.1.x86_64 ..............................................................................[done]
(14/55) Installing: libX11-xcb1-1.6.2-12.5.1.x86_64 ........................................................................[done]
(15/55) Installing: libstdc++6-32bit-8.2.1+r264010-1.3.3.x86_64 ............................................................[done]
(16/55) Installing: libstdc++6-8.2.1+r264010-1.3.3.x86_64 ..................................................................[done]
(17/55) Installing: bash-4.3-83.15.1.x86_64 ................................................................................[done]
(18/55) Installing: libwacom2-0.9-2.4.2.x86_64 .............................................................................[done]
(19/55) Installing: libxcb-xv0-1.10-4.3.1.x86_64 ...........................................................................[done]
(20/55) Installing: libxcb-xkb1-1.10-4.3.1.x86_64 ..........................................................................[done]
(21/55) Installing: libxcb-xinerama0-1.10-4.3.1.x86_64 .....................................................................[done]
(22/55) Installing: libxcb-xfixes0-1.10-4.3.1.x86_64 .......................................................................[done]
(23/55) Installing: libxcb-xf86dri0-1.10-4.3.1.x86_64 ......................................................................[done]
(24/55) Installing: libxcb-sync1-1.10-4.3.1.x86_64 .........................................................................[done]
(25/55) Installing: libxcb-shm0-1.10-4.3.1.x86_64 ..........................................................................[done]
(26/55) Installing: libxcb-shape0-1.10-4.3.1.x86_64 ........................................................................[done]
(27/55) Installing: libxcb-render0-1.10-4.3.1.x86_64 .......................................................................[done]
(28/55) Installing: libxcb-randr0-1.10-4.3.1.x86_64 ........................................................................[done]
(29/55) Installing: libxcb-present0-1.10-4.3.1.x86_64 ......................................................................[done]
(30/55) Installing: libxcb-glx0-1.10-4.3.1.x86_64 ..........................................................................[done]
(31/55) Installing: libxcb-dri3-0-1.10-4.3.1.x86_64 ........................................................................[done]
(32/55) Installing: libxcb-dri2-0-1.10-4.3.1.x86_64 ........................................................................[done]
(33/55) Installing: libX11-6-1.6.2-12.5.1.x86_64 ...........................................................................[done]
(34/55) Installing: libtsan0-8.2.1+r264010-1.3.3.x86_64 ....................................................................[done]
(35/55) Installing: readline-doc-6.3-83.15.1.noarch ........................................................................[done]
(36/55) Installing: xorg-x11-server-extra-7.6_1.18.3-76.21.2.x86_64 ........................................................[done]
(37/55) Installing: libMagickCore-6_Q16-1-6.8.8.1-71.79.1.x86_64 ...........................................................[done]
(38/55) Installing: bash-doc-4.3-83.15.1.noarch ............................................................................[done]
(39/55) Installing: libMagickWand-6_Q16-1-6.8.8.1-71.79.1.x86_64 ...........................................................[done]
(40/55) Installing: xorg-x11-server-7.6_1.18.3-76.21.2.x86_64 ..............................................................[done]
Additional rpm output:
Updating /etc/sysconfig/displaymanager...


(41/55) Installing: libxcb1-32bit-1.10-4.3.1.x86_64 ........................................................................[done]
(42/55) Installing: libX11-xcb1-32bit-1.6.2-12.5.1.x86_64 ..................................................................[done]
(43/55) Installing: kernel-devel-4.4.156-94.61.1.noarch ....................................................................[done]
Additional rpm output:
Changing symlink /usr/src/linux from linux-4.4.156-94.57 to linux-4.4.156-94.61


(44/55) Installing: kernel-default-4.4.156-94.61.1.x86_64 ..................................................................[done]
Additional rpm output:
Creating initrd: /boot/initrd-4.4.156-94.61-default
dracut: Executing: /usr/bin/dracut --logfile /var/log/YaST2/mkinitrd.log --force /boot/initrd-4.4.156-94.61-default 4.4.156-94.61-default
dracut: *** Including module: bash ***
dracut: *** Including module: systemd ***
dracut: *** Including module: warpclock ***
dracut: *** Including module: systemd-initrd ***
dracut: *** Including module: i18n ***
dracut: *** Including module: drm ***
dracut: *** Including module: plymouth ***
dracut: *** Including module: dm ***
dracut: Skipping udev rule: 64-device-mapper.rules
dracut: Skipping udev rule: 60-persistent-storage-dm.rules
dracut: Skipping udev rule: 55-dm.rules
dracut: *** Including module: kernel-modules ***
dracut: *** Including module: lvm ***
dracut: Skipping udev rule: 64-device-mapper.rules
dracut: Skipping udev rule: 56-lvm.rules
dracut: Skipping udev rule: 60-persistent-storage-lvm.rules
dracut: *** Including module: resume ***
dracut: *** Including module: rootfs-block ***
dracut: *** Including module: suse-btrfs ***
dracut: *** Including module: suse-xfs ***
dracut: *** Including module: terminfo ***
dracut: *** Including module: udev-rules ***
dracut: Skipping udev rule: 40-redhat.rules
dracut: Skipping udev rule: 50-firmware.rules
dracut: Skipping udev rule: 50-udev.rules
dracut: Skipping udev rule: 91-permissions.rules
dracut: Skipping udev rule: 80-drivers-modprobe.rules
dracut: *** Including module: dracut-systemd ***
dracut: *** Including module: haveged ***
dracut: *** Including module: usrmount ***
dracut: *** Including module: base ***
dracut: *** Including module: fs-lib ***
dracut: *** Including module: shutdown ***
dracut: *** Including module: suse ***
dracut: *** Including modules done ***
dracut: *** Installing kernel module dependencies and firmware ***
dracut: *** Installing kernel module dependencies and firmware done ***
dracut: *** Resolving executable dependencies ***
dracut: *** Resolving executable dependencies done***
dracut: *** Hardlinking files ***
dracut: *** Hardlinking files done ***
dracut: *** Stripping files ***
dracut: *** Stripping files done ***
dracut: *** Generating early-microcode cpio image ***
dracut: *** Constructing GenuineIntel.bin ****
dracut: *** Store current command line parameters ***
dracut: Stored kernel commandline:
dracut:  rd.lvm.lv=system/root
 rd.lvm.lv=system/swap
dracut:  resume=/dev/mapper/system-swap
dracut:  root=/dev/mapper/system-root rootfstype=xfs rootflags=rw,relatime,attr2,inode64,noquota
dracut: *** Creating image file '/boot/initrd-4.4.156-94.61-default' ***
dracut: *** Creating initramfs image file '/boot/initrd-4.4.156-94.61-default' done ***


(45/55) Installing: libxcb-xfixes0-32bit-1.10-4.3.1.x86_64 .................................................................[done]
(46/55) Installing: libxcb-sync1-32bit-1.10-4.3.1.x86_64 ...................................................................[done]
(47/55) Installing: libxcb-shm0-32bit-1.10-4.3.1.x86_64 ....................................................................[done]
(48/55) Installing: libxcb-render0-32bit-1.10-4.3.1.x86_64 .................................................................[done]
(49/55) Installing: libxcb-present0-32bit-1.10-4.3.1.x86_64 ................................................................[done]
(50/55) Installing: libxcb-glx0-32bit-1.10-4.3.1.x86_64 ....................................................................[done]
(51/55) Installing: libxcb-dri3-0-32bit-1.10-4.3.1.x86_64 ..................................................................[done]
(52/55) Installing: libxcb-dri2-0-32bit-1.10-4.3.1.x86_64 ..................................................................[done]
(53/55) Installing: libX11-6-32bit-1.6.2-12.5.1.x86_64 .....................................................................[done]
(54/55) Installing: kernel-source-4.4.156-94.61.1.noarch ...................................................................[done]
(55/55) Installing: kernel-default-devel-4.4.156-94.61.1.x86_64 ............................................................[done]
Additional rpm output:
Changing symlink /usr/src/linux-obj/x86_64/default from ../../linux-4.4.156-94.57-obj/x86_64/default to ../../linux-4.4.156-94.61-obj/x86_64/default


There are some running programs that might use files deleted by recent upgrade. You may wish to check and restart some of them. Run 'zypper ps -s' to list these programs.
server:~ # zypper in kernel-source kernel-syms libelf-devel module-init-tools make gcc rpmbuild
Refreshing service 'SUSE_Linux_Enterprise_Server_for_SAP_Applications_12_SP3_x86_64'.
Loading repository data...
Reading installed packages...
'libelf-devel' not found in package names. Trying capabilities.
No provider of 'libelf-devel' found.
'gcc' is already installed.
No update candidate for 'gcc-4.8-6.189.x86_64'. The highest available version is already installed.
'make' is already installed.
No update candidate for 'make-4.0-4.1.x86_64'. The highest available version is already installed.
'kernel-source' is already installed.
No update candidate for 'kernel-source-4.4.156-94.61.1.noarch'. The highest available version is already installed.
'module-init-tools' not found in package names. Trying capabilities.
'kmod-compat' providing 'module-init-tools' is already installed.
'rpmbuild' not found in package names. Trying capabilities.
Resolving package dependencies...

The following 7 NEW packages are going to be installed:
  gettext-tools kernel-syms mozilla-nss-tools pesign pesign-obs-integration rpm-build systemd-rpm-macros

7 new packages to install.
Overall download size: 5.4 MiB. Already cached: 0 B. After the operation, additional 10.1 MiB will be used.
Continue? [y/n/...? shows all options] (y): y
Retrieving package gettext-tools-0.19.2-1.103.x86_64                                         (1/7),   1.8 MiB (  7.9 MiB unpacked)
Retrieving: gettext-tools-0.19.2-1.103.x86_64.rpm ............................................................[done (912.0 KiB/s)]
Retrieving package mozilla-nss-tools-3.29.5-58.12.1.x86_64                                   (2/7), 391.3 KiB (  1.8 MiB unpacked)
Retrieving: mozilla-nss-tools-3.29.5-58.12.1.x86_64.rpm ....................................................................[done]
Retrieving package pesign-0.109-6.3.1.x86_64                                                 (3/7),  99.2 KiB (404.2 KiB unpacked)
Retrieving: pesign-0.109-6.3.1.x86_64.rpm ..................................................................................[done]
Retrieving package systemd-rpm-macros-3-10.9.1.noarch                                        (4/7),   9.0 KiB ( 12.0 KiB unpacked)
Retrieving: systemd-rpm-macros-3-10.9.1.noarch.rpm .........................................................................[done]
Retrieving package pesign-obs-integration-10.0-30.8.1.x86_64                                 (5/7),  27.1 KiB ( 58.6 KiB unpacked)
Retrieving: pesign-obs-integration-10.0-30.8.1.x86_64.rpm ..................................................................[done]
Retrieving package rpm-build-4.11.2-16.13.1.x86_64                                           (6/7),  34.8 KiB ( 24.6 KiB unpacked)
Retrieving: rpm-build-4.11.2-16.13.1.x86_64.rpm ............................................................................[done]
Retrieving package kernel-syms-4.4.156-94.61.1.x86_64                                        (7/7),   3.1 MiB (  345   B unpacked)
Retrieving: kernel-syms-4.4.156-94.61.1.x86_64.rpm ...........................................................[done (943.9 KiB/s)]
Checking for file conflicts: ...............................................................................................[done]
(1/7) Installing: gettext-tools-0.19.2-1.103.x86_64 ........................................................................[done]
(2/7) Installing: mozilla-nss-tools-3.29.5-58.12.1.x86_64 ..................................................................[done]
(3/7) Installing: pesign-0.109-6.3.1.x86_64 ................................................................................[done]
(4/7) Installing: systemd-rpm-macros-3-10.9.1.noarch .......................................................................[done]
(5/7) Installing: pesign-obs-integration-10.0-30.8.1.x86_64 ................................................................[done]
(6/7) Installing: rpm-build-4.11.2-16.13.1.x86_64 ..........................................................................[done]
(7/7) Installing: kernel-syms-4.4.156-94.61.1.x86_64 .......................................................................[done]
Installation has completed with error.
server:~ # rpmbuild --rebuild sm750-4.4.73-3.1.src.rpm
Installing sm750-4.4.73-3.1.src.rpm
warning: sm750-4.4.73-3.1.src.rpm: Header V3 RSA/SHA256 Signature, key ID 3508c1dd: NOKEY
error: Failed build dependencies:
        libelf-devel is needed by sm750-4.4.1564.4.156-3.1.x86_64
One off-topic: I'm trying to edit the last message to correct a mistake, but I can't find the option. I don't know If I can do it or not.