Bonjour,
j'utilise Fedora 20 (64 bits) avec le bureau KDE sur un Dell Inspiron 1721. Ça marche très bien, sauf que la connexion internet se termine de façon intempestive, et j'ai eu beau chercher, je ne vois vraiment pas d'où cela peut venir.
Le plus étonnant est que sur ma neufbox SFR, j'ai trois ordinateurs portables sous Fedora et les deux autres marchent parfaitement bien (tous en wifi).
Sur le Dell, il est à noter que je ne vois plus le SSID du réseau lorsque l'ordinateur se déconnecte tout seul, mais les autres réseaux (SFR WiFi FON et SFR WiFi mobile) sont toujours visibles et accessibles !
Pour retrouver la connexion, je dois désactiver la connexion wifi puis la réactiver.
Puisqu'il vient juste de se déconnecter, je vous joins le contenu de /var/log/message :
Jan 17 17:07:00 Inspiron-1721 NetworkManager[586]: <info> (wlan0): supplicant interface state: disconnected -> scanning
Jan 17 17:07:00 Inspiron-1721 kernel: [ 9254.824476] wlan0: authenticate with 00:25:15:3f:a5:c8
Jan 17 17:07:01 Inspiron-1721 kernel: [ 9254.831775] wlan0: send auth to 00:25:15:3f:a5:c8 (try 1/3)
Jan 17 17:07:01 Inspiron-1721 NetworkManager[586]: <info> (wlan0): supplicant interface state: scanning -> authenticating
Jan 17 17:07:01 Inspiron-1721 kernel: [ 9255.032062] wlan0: send auth to 00:25:15:3f:a5:c8 (try 2/3)
Jan 17 17:07:01 Inspiron-1721 kernel: [ 9255.233062] wlan0: send auth to 00:25:15:3f:a5:c8 (try 3/3)
Jan 17 17:07:01 Inspiron-1721 kernel: [ 9255.434060] wlan0: authentication with 00:25:15:3f:a5:c8 timed out
Jan 17 17:07:01 Inspiron-1721 NetworkManager[586]: <info> (wlan0): supplicant interface state: authenticating -> disconnected
Jan 17 17:07:04 Inspiron-1721 NetworkManager[586]: <warn> (wlan0): link timed out.
Jan 17 17:07:04 Inspiron-1721 NetworkManager[586]: <info> (wlan0): device state change: activated -> failed (reason 'SSID not found') [100 120 53]
Jan 17 17:07:04 Inspiron-1721 NetworkManager[586]: <info> NetworkManager state is now DISCONNECTED
Jan 17 17:07:04 Inspiron-1721 NetworkManager[586]: <warn> Activation (wlan0) failed for connection 'NEUF_A5C4'
Jan 17 17:07:04 Inspiron-1721 NetworkManager[586]: <info> (wlan0): device state change: failed -> disconnected (reason 'none') [120 30 0]
Jan 17 17:07:04 Inspiron-1721 NetworkManager[586]: <info> (wlan0): deactivating device (reason 'none') [0]
Jan 17 17:07:04 Inspiron-1721 dbus-daemon: dbus[507]: [system] Activating via systemd: service name='org.freedesktop.nm_dispatcher' unit='dbus-org.freedesktop.nm-dispatcher.service'
Jan 17 17:07:04 Inspiron-1721 dbus[507]: [system] Activating via systemd: service name='org.freedesktop.nm_dispatcher' unit='dbus-org.freedesktop.nm-dispatcher.service'
Jan 17 17:07:04 Inspiron-1721 systemd: Starting Network Manager Script Dispatcher Service...
Jan 17 17:07:04 Inspiron-1721 dbus-daemon: dbus[507]: [system] Successfully activated service 'org.freedesktop.nm_dispatcher'
Jan 17 17:07:04 Inspiron-1721 dbus[507]: [system] Successfully activated service 'org.freedesktop.nm_dispatcher'
Jan 17 17:07:04 Inspiron-1721 systemd: Started Network Manager Script Dispatcher Service.
Jan 17 17:07:04 Inspiron-1721 NetworkManager[586]: <info> (wlan0): canceled DHCP transaction, DHCP client pid 1081
Jan 17 17:07:04 Inspiron-1721 avahi-daemon[446]: Withdrawing address record for 192.168.1.31 on wlan0.
Jan 17 17:07:04 Inspiron-1721 avahi-daemon[446]: Leaving mDNS multicast group on interface wlan0.IPv4 with address 192.168.1.31.
Jan 17 17:07:04 Inspiron-1721 avahi-daemon[446]: Interface wlan0.IPv4 no longer relevant for mDNS.
Jan 17 17:07:05 Inspiron-1721 NetworkManager[586]: <info> (wlan0): supplicant interface state: disconnected -> inactive
Jan 17 17:08:12 Inspiron-1721 dbus-daemon: dbus[507]: [system] Activating via systemd: service name='net.reactivated.Fprint' unit='fprintd.service'
Jan 17 17:08:12 Inspiron-1721 dbus[507]: [system] Activating via systemd: service name='net.reactivated.Fprint' unit='fprintd.service'
Jan 17 17:08:12 Inspiron-1721 systemd: Starting Fingerprint Authentication Daemon...
Jan 17 17:08:12 Inspiron-1721 dbus-daemon: dbus[507]: [system] Successfully activated service 'net.reactivated.Fprint'
Jan 17 17:08:12 Inspiron-1721 dbus[507]: [system] Successfully activated service 'net.reactivated.Fprint'
Jan 17 17:08:12 Inspiron-1721 systemd: Started Fingerprint Authentication Daemon.
Jan 17 17:08:12 Inspiron-1721 fprintd: Launching FprintObject
Jan 17 17:08:12 Inspiron-1721 fprintd: ** Message: D-Bus service launched with name: net.reactivated.Fprint
Jan 17 17:08:12 Inspiron-1721 fprintd: ** Message: entering main loop
Jan 17 17:08:14 Inspiron-1721 su: (to root) chantal on pts/1
Jan 17 17:08:42 Inspiron-1721 fprintd: ** Message: No devices in use, exit
Pour information, voici un lspci :
00:00.0 Host bridge: Advanced Micro Devices, Inc. [AMD/ATI] RS690 Host Bridge
00:01.0 PCI bridge: Advanced Micro Devices, Inc. [AMD/ATI] RS690 PCI to PCI Bridge (Internal gfx)
00:05.0 PCI bridge: Advanced Micro Devices, Inc. [AMD/ATI] RS690 PCI to PCI Bridge (PCI Express Port 1)
00:07.0 PCI bridge: Advanced Micro Devices, Inc. [AMD/ATI] RS690 PCI to PCI Bridge (PCI Express Port 3)
00:12.0 SATA controller: Advanced Micro Devices, Inc. [AMD/ATI] SB600 Non-Raid-5 SATA
00:13.0 USB controller: Advanced Micro Devices, Inc. [AMD/ATI] SB600 USB (OHCI0)
00:13.1 USB controller: Advanced Micro Devices, Inc. [AMD/ATI] SB600 USB (OHCI1)
00:13.2 USB controller: Advanced Micro Devices, Inc. [AMD/ATI] SB600 USB (OHCI2)
00:13.3 USB controller: Advanced Micro Devices, Inc. [AMD/ATI] SB600 USB (OHCI3)
00:13.4 USB controller: Advanced Micro Devices, Inc. [AMD/ATI] SB600 USB (OHCI4)
00:13.5 USB controller: Advanced Micro Devices, Inc. [AMD/ATI] SB600 USB Controller (EHCI)
00:14.0 SMBus: Advanced Micro Devices, Inc. [AMD/ATI] SBx00 SMBus Controller (rev 14)
00:14.1 IDE interface: Advanced Micro Devices, Inc. [AMD/ATI] SB600 IDE
00:14.2 Audio device: Advanced Micro Devices, Inc. [AMD/ATI] SBx00 Azalia (Intel HDA)
00:14.3 ISA bridge: Advanced Micro Devices, Inc. [AMD/ATI] SB600 PCI to LPC Bridge
00:14.4 PCI bridge: Advanced Micro Devices, Inc. [AMD/ATI] SBx00 PCI to PCI Bridge
00:18.0 Host bridge: Advanced Micro Devices, Inc. [AMD] K8 [Athlon64/Opteron] HyperTransport Technology Configuration
00:18.1 Host bridge: Advanced Micro Devices, Inc. [AMD] K8 [Athlon64/Opteron] Address Map
00:18.2 Host bridge: Advanced Micro Devices, Inc. [AMD] K8 [Athlon64/Opteron] DRAM Controller
00:18.3 Host bridge: Advanced Micro Devices, Inc. [AMD] K8 [Athlon64/Opteron] Miscellaneous Control
01:05.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] RS690M [Radeon Xpress 1200/1250/1270]
03:00.0 Ethernet controller: Broadcom Corporation BCM4401-B0 100Base-TX (rev 02)
03:01.0 FireWire (IEEE 1394): Ricoh Co Ltd R5C832 IEEE 1394 Controller (rev 05)
03:01.1 SD Host controller: Ricoh Co Ltd R5C822 SD/SDIO/MMC/MS/MSPro Host Adapter (rev 22)
03:01.2 System peripheral: Ricoh Co Ltd R5C592 Memory Stick Bus Host Adapter (rev 12)
03:01.3 System peripheral: Ricoh Co Ltd xD-Picture Card Controller (rev 12)
0b:00.0 Network controller: Broadcom Corporation BCM4311 802.11b/g WLAN (rev 01)