Non aucune erreur du coté de /var/log/boot je vérifie à chaque allumage !
Mounting Configuration File System...
[ OK ] Mounted Configuration File System.
[ OK ] Started Show Plymouth Boot Screen.
[ OK ] Reached target Paths.
[ OK ] Reached target Basic System.
[ OK ] Found device /dev/mapper/fedora-root.
Starting File System Check on /dev/mapper/fedora-root...
[ OK ] Started dracut initqueue hook.
[ OK ] Reached target Remote File Systems (Pre).
[ OK ] Reached target Remote File Systems.
[ 3.644362] systemd-fsck[388]: /dev/mapper/fedora-root: clean, 221568/3276800 files, 2312104/13107200 blocks
[ OK ] Started File System Check on /dev/mapper/fedora-root.
Mounting /sysroot...
[ OK ] Mounted /sysroot.
[ OK ] Reached target Initrd Root File System.
Starting Reload Configuration from the Real Root...
[ OK ] Started Reload Configuration from the Real Root.
[ OK ] Reached target Initrd File Systems.
[ OK ] Reached target Initrd Default Target.
Starting dracut pre-pivot and cleanup hook...
[ OK ] Started dracut pre-pivot and cleanup hook.
Starting Cleaning Up and Shutting Down Daemons...
Starting Plymouth switch root service...
[ OK ] Stopped target Timers.
[ OK ] Stopped Cleaning Up and Shutting Down Daemons.
[ OK ] Stopped dracut pre-pivot and cleanup hook.
Stopping dracut pre-pivot and cleanup hook...
[ OK ] Stopped target Remote File Systems.
[ OK ] Stopped target Remote File Systems (Pre).
[ OK ] Stopped dracut initqueue hook.
Stopping dracut initqueue hook...
[ OK ] Stopped target Initrd Default Target.
[ OK ] Stopped target Basic System.
[ OK ] Stopped target System Initialization.
[ OK ] Stopped target Local File Systems.
[ OK ] Stopped udev Coldplug all Devices.
Stopping udev Coldplug all Devices...
[ OK ] Stopped dracut pre-trigger hook.
Stopping dracut pre-trigger hook...
[ OK ] Stopped target Swap.
[ OK ] Stopped Apply Kernel Variables.
Stopping Apply Kernel Variables...
Stopping udev Kernel Device Manager...
[ OK ] Stopped target Slices.
[ OK ] Stopped target Paths.
[ OK ] Stopped target Sockets.
[ OK ] Stopped udev Kernel Device Manager.
[ OK ] Stopped Create Static Device Nodes in /dev.
Stopping Create Static Device Nodes in /dev...
[ OK ] Stopped Create list of required static device nodes for the current kernel.
Stopping Create list of required static device nodes for the current kernel...
[ OK ] Stopped dracut pre-udev hook.
Stopping dracut pre-udev hook...
[ OK ] Stopped dracut cmdline hook.
Stopping dracut cmdline hook...
[ OK ] Closed udev Kernel Socket.
[ OK ] Closed udev Control Socket.
Starting Cleanup udevd DB...
[ OK ] Started Cleanup udevd DB.
[ OK ] Reached target Switch Root.
[ OK ] Started Plymouth switch root service.
Starting Switch Root...
Welcome to Fedora 22 (Twenty Two)!
[ OK ] Stopped Switch Root.
[ OK ] Stopped Flush Journal to Persistent Storage.
[ OK ] Stopped Journal Service.
Starting Journal Service...
Mounting POSIX Message Queue File System...
[ OK ] Listening on /dev/initctl Compatibility Named Pipe.
[ OK ] Set up automount Arbitrary Executable File Formats File System Automount Point.
Mounting NFSD configuration filesystem...
[ OK ] Listening on udev Kernel Socket.
[ OK ] Listening on Delayed Shutdown Socket.
Starting Create list of required static device nodes for the current kernel...
[ OK ] Reached target Login Prompts.
[ OK ] Listening on udev Control Socket.
Mounting Temporary Directory...
[ OK ] Reached target User and Group Name Lookups.
[ OK ] Stopped File System Check on /dev/mapper/fedora-root.
Stopping File System Check on /dev/mapper/fedora-root...
Starting File System Check on Root Device...
Mounting Debug File System...
[ OK ] Stopped target Switch Root.
[ OK ] Stopped target Initrd Root File System.
[ OK ] Stopped target Initrd File Systems.
[ OK ] Listening on Device-mapper event daemon FIFOs.
Starting Apply Kernel Variables...
[ OK ] Created slice system-getty.slice.
[ OK ] Created slice User and Session Slice.
[ OK ] Reached target Slices.
[ OK ] Listening on LVM2 metadata daemon socket.
Starting Monitoring of LVM2 mirrors, snapshots etc. using dmeventd or progress polling...
Mounting Huge Pages File System...
Starting Set Up Additional Binary Formats...
[ OK ] Started Create list of required static device nodes for the current kernel.
Mounting Arbitrary Executable File Formats File System...
[ OK ] Started Apply Kernel Variables.
[ OK ] Mounted Huge Pages File System.
[ OK ] Mounted POSIX Message Queue File System.
[ OK ] Mounted Debug File System.
[ OK ] Mounted Temporary Directory.
[ OK ] Started Journal Service.
[ OK ] Started LVM2 metadata daemon.
Starting LVM2 metadata daemon...
[ 8.705785] systemd-fsck[487]: /dev/mapper/fedora-root : propre, 221568/3276800 fichiers, 2312104/13107200 blocs
[ OK ] Mounted Arbitrary Executable File Formats File System.
[ OK ] Started File System Check on Root Device.
Starting Remount Root and Kernel File Systems...
[ OK ] Started Set Up Additional Binary Formats.
[ OK ] Started Remount Root and Kernel File Systems.
Starting Flush Journal to Persistent Storage...
Starting Configure read-only root support...
Starting Create Static Device Nodes in /dev...
Starting udev Coldplug all Devices...
[ OK ] Mounted NFSD configuration filesystem.
[ OK ] Started Configure read-only root support.
Starting Load/Save Random Seed...
[ OK ] Started udev Coldplug all Devices.
Starting udev Wait for Complete Device Initialization...
[ OK ] Started Load/Save Random Seed.
[ OK ] Started Monitoring of LVM2 mirrors, snapshots etc. using dmeventd or progress polling.
[ OK ] Started Create Static Device Nodes in /dev.
Starting udev Kernel Device Manager...
[ OK ] Reached target Local File Systems (Pre).
[ OK ] Started Flush Journal to Persistent Storage.
[ OK ] Started udev Kernel Device Manager.
[ OK ] Created slice system-systemd\x2dbacklight.slice.
Starting Load/Save Screen Backlight Brightness of backlight:intel_backlight...
[ OK ] Started Load/Save Screen Backlight Brightness of backlight:intel_backlight.
[ OK ] Created slice system-systemd\x2drfkill.slice.
Starting Load/Save RF Kill Switch Status of rfkill0...
[ OK ] Started Load/Save RF Kill Switch Status of rfkill0.
[ OK ] Found device HGST_HTS545050A7E680 1.
Starting File System Check on /dev/disk/by-uuid/ae8d39cb-7336-4b92-96a2-2bd0b9604731...
[ OK ] Created slice system-lvm2\x2dpvscan.slice.
Starting LVM2 PV scan on device 8:2...
[ 19.815381] systemd-fsck[589]: /dev/sda1 : propre, 429/128016 fichiers, 189561/512000 blocs
[ OK ] Started File System Check on /dev/disk/by-uuid/ae8d39cb-7336-4b92-96a2-2bd0b9604731.
Mounting /boot...
[ OK ] Reached target Sound Card.
[ OK ] Found device /dev/mapper/fedora-swap.
Activating swap /dev/mapper/fedora-swap...
[ OK ] Mounted /boot.
[ OK ] Activated swap /dev/mapper/fedora-swap.
[ OK ] Reached target Swap.
Starting Load/Save RF Kill Switch Status of rfkill1...
[ OK ] Started Load/Save RF Kill Switch Status of rfkill1.
[ OK ] Found device /dev/mapper/fedora-home.
Starting File System Check on /dev/mapper/fedora-home...
[ OK ] Started udev Wait for Complete Device Initialization.
[ OK ] Started LVM2 PV scan on device 8:2.
Starting Activation of DM RAID sets...
[ 22.018277] systemd-fsck[643]: /dev/mapper/fedora-home : propre, 62642/26976256 fichiers, 5571652/107876352 blocs
[ OK ] Started File System Check on /dev/mapper/fedora-home.
Mounting /home...
[ OK ] Mounted /home.
[ OK ] Started Activation of DM RAID sets.
[ OK ] Reached target Local File Systems.
Starting Import network configuration from initramfs...
Starting Restore /run/initramfs on shutdown...
Starting Preprocess NFS configuration...
Starting Tell Plymouth To Write Out Runtime Data...
[ OK ] Reached target Encrypted Volumes.
[ OK ] Started Tell Plymouth To Write Out Runtime Data.
[ OK ] Started Restore /run/initramfs on shutdown.
[ OK ] Started Preprocess NFS configuration.
[ OK ] Started Import network configuration from initramfs.
Starting Create Volatile Files and Directories...
[ OK ] Started Create Volatile Files and Directories.
Starting Security Auditing Service...
Mounting RPC Pipe File System...
[ OK ] Mounted RPC Pipe File System.
[ OK ] Started Security Auditing Service.
Starting Update UTMP about System Boot/Shutdown...
[ OK ] Started Update UTMP about System Boot/Shutdown.
[ OK ] Reached target System Initialization.
[ OK ] Listening on Open-iSCSI iscsiuio Socket.
[ OK ] Listening on RPCbind Server Activation Socket.
[ OK ] Listening on Open-iSCSI iscsid Socket.
[ OK ] Reached target Paths.
[ OK ] Listening on Avahi mDNS/DNS-SD Stack Activation Socket.
[ OK ] Listening on CUPS Scheduler.
[ OK ] Listening on D-Bus System Message Bus Socket.
[ OK ] Reached target Sockets.
[ OK ] Reached target Basic System.
Starting NTP client/server...
Starting LSB: Init script for live image....
Starting Hardware Monitoring Sensors...
[ OK ] Started irqbalance daemon.
Starting irqbalance daemon...
Starting Machine Check Exception Logging Daemon...
Starting Avahi mDNS/DNS-SD Stack...
Starting RealtimeKit Scheduling Policy Service...
Starting Accounts Service...
Starting firewalld - dynamic firewall daemon...
[ OK ] Started Hardware RNG Entropy Gatherer Daemon.
Starting Hardware RNG Entropy Gatherer Daemon...
[ OK ] Started Self Monitoring and Reporting Technology (SMART) Daemon.
Starting Self Monitoring and Reporting Technology (SMART) Daemon...
Starting GSSAPI Proxy Daemon...
Starting System Logging Service...
[ OK ] Started D-Bus System Message Bus.
[ OK ] Started Avahi mDNS/DNS-SD Stack.
[ OK ] Started RealtimeKit Scheduling Policy Service.
Starting D-Bus System Message Bus...
Starting Login Service...
[ OK ] Started Manage Sound Card State (restore and store).
Starting Manage Sound Card State (restore and store)...
[ OK ] Reached target Timers.
[ OK ] Started System Logging Service.
[ OK ] Started LSB: Init script for live image..
[ OK ] Started Machine Check Exception Logging Daemon.
[ OK ] Started GSSAPI Proxy Daemon.
[ OK ] Reached target NFS client services.
Starting ABRT Automated Bug Reporting Tool...
Starting SYSV: Late init script for live image....
[ OK ] Started SYSV: Late init script for live image..
[ OK ] Started Login Service.
[ OK ] Started NTP client/server.
[ OK ] Started Hardware Monitoring Sensors.
Starting Authorization Manager...
[ OK ] Started Authorization Manager.
[ OK ] Started Accounts Service.
[ OK ] Started firewalld - dynamic firewall daemon.
Starting Network Manager...
[ OK ] Started Network Manager.
[ OK ] Reached target Network.
Starting Notify NFS peers of a restart...
[ OK ] Started Logout off all iSCSI sessions on shutdown.
Starting Logout off all iSCSI sessions on shutdown...
[ OK ] Reached target Remote File Systems (Pre).
[ OK ] Reached target Remote File Systems.
Starting Permit User Sessions...
[ OK ] Started Notify NFS peers of a restart.
[ OK ] Started Permit User Sessions.
Starting Terminate Plymouth Boot Screen...
Est ce que ca peut venir d'un trop grand nombre de service à l'allumage ?
Est il possible de lancer certains services en différé ? du genre une partie une minute après l'allumage, une autre partie 5 minutes après l'allumage, etc ? En procédant comme ca je pourrais répartir le chargement d'une partie des services dans le temps et éviter que tout se fasse d'un coup.
Si cette idée est mauvaise n'hésitez pas à le préciser, et me dire pourquoi ! autant en profiter pour apprendre !