Bonjour,

Je viens d'installer une Debian Squeeze sur mon nouveau Acer Aspire 5749 et je rencontre des problèmes de réseau :
*Ethernet (!!) : j'arrive à me connecter au début, puis après quelques minutes d'utilisation, la connexion meurt, impossible de la réactiver (en tout cas via l'interface graphique, je ne connais pas de commandes pour ça). La seule solution que j'ai est de rebooter. Et je rencontre à nouveau le même problème.

* Wifi : je n'arrive pas à l'activer. J'ai suivi les instructions sur : wiki.debian.org/iwlagn mais ça ne fonctionne pas (iwconfig retourne : "x no wireless extension" pour x dans "lo","eth0","pan0").

Quelqu'un a des solutions ?

Quelques résultats de commandes :
lspci -knn :
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00:00.0 Host bridge [0600]: Intel Corporation Sandy Bridge DRAM Controller [8086:0104] (rev 09)
	Subsystem: Acer Incorporated [ALI] Device [1025:0623]
00:02.0 VGA compatible controller [0300]: Intel Corporation Sandy Bridge Integrated Graphics Controller [8086:0116] (rev 09)
	Subsystem: Acer Incorporated [ALI] Device [1025:0623]
00:16.0 Communication controller [0780]: Intel Corporation Cougar Point HECI Controller #1 [8086:1c3a] (rev 04)
	Subsystem: Acer Incorporated [ALI] Device [1025:0623]
00:1a.0 USB Controller [0c03]: Intel Corporation Cougar Point USB Enhanced Host Controller #2 [8086:1c2d] (rev 05)
	Subsystem: Acer Incorporated [ALI] Device [1025:0623]
	Kernel driver in use: ehci_hcd
00:1b.0 Audio device [0403]: Intel Corporation Cougar Point High Definition Audio Controller [8086:1c20] (rev 05)
	Subsystem: Acer Incorporated [ALI] Device [1025:0623]
	Kernel driver in use: HDA Intel
00:1c.0 PCI bridge [0604]: Intel Corporation Cougar Point PCI Express Root Port 1 [8086:1c10] (rev b5)
	Kernel driver in use: pcieport
00:1c.5 PCI bridge [0604]: Intel Corporation Cougar Point PCI Express Root Port 6 [8086:1c1a] (rev b5)
	Kernel driver in use: pcieport
00:1d.0 USB Controller [0c03]: Intel Corporation Cougar Point USB Enhanced Host Controller #1 [8086:1c26] (rev 05)
	Subsystem: Acer Incorporated [ALI] Device [1025:0623]
	Kernel driver in use: ehci_hcd
00:1f.0 ISA bridge [0601]: Intel Corporation Cougar Point LPC Controller [8086:1c49] (rev 05)
	Subsystem: Acer Incorporated [ALI] Device [1025:0623]
00:1f.2 SATA controller [0106]: Intel Corporation Cougar Point 6 port SATA AHCI Controller [8086:1c03] (rev 05)
	Subsystem: Acer Incorporated [ALI] Device [1025:0623]
	Kernel driver in use: ahci
00:1f.3 SMBus [0c05]: Intel Corporation Cougar Point SMBus Controller [8086:1c22] (rev 05)
	Subsystem: Acer Incorporated [ALI] Device [1025:0623]
02:00.0 Ethernet controller [0200]: Atheros Communications AR8152 v2.0 Fast Ethernet [1969:2062] (rev c1)
	Subsystem: Acer Incorporated [ALI] Device [1025:0623]
	Kernel driver in use: atl1c
07:00.0 Network controller [0280]: Intel Corporation WiFi 100 Series [8086:08ae]
	Subsystem: Intel Corporation Device [8086:1005]
lsmod :
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Module                  Size  Used by
isofs                  24608  1 
nls_utf8                 908  2 
nls_cp437               4489  1 
vfat                    6570  1 
fat                    34912  1 vfat
udf                    62930  0 
crc_itu_t               1035  1 udf
acpi_cpufreq            4951  1 
cpufreq_stats           1997  0 
cpufreq_conservative     4018  0 
cpufreq_userspace       1480  0 
cpufreq_powersave        602  0 
parport_pc             15871  0 
ppdev                   4058  0 
lp                      5570  0 
parport                22554  3 parport_pc,ppdev,lp
sco                     5885  2 
bridge                 33031  0 
stp                      996  1 bridge
bnep                    7452  2 
rfcomm                 25199  0 
l2cap                  21721  6 bnep,rfcomm
bluetooth              36319  6 sco,bnep,rfcomm,l2cap
i915                  223566  0 
drm_kms_helper         18569  1 i915
drm                   112616  2 i915,drm_kms_helper
i2c_algo_bit            3497  1 i915
binfmt_misc             4907  1 
uinput                  4796  1 
fuse                   44268  1 
ext3                   94396  1 
jbd                    32317  1 ext3
loop                    9769  0 
snd_hda_codec_realtek   163318  1 
snd_hda_intel          16907  1 
snd_hda_codec          46002  2 snd_hda_codec_realtek,snd_hda_intel
snd_hwdep               4054  1 snd_hda_codec
snd_pcm                47386  2 snd_hda_intel,snd_hda_codec
joydev                  6739  0 
snd_seq                35463  0 
snd_timer              12270  2 snd_pcm,snd_seq
uvcvideo               45582  0 
videodev               25605  1 uvcvideo
snd_seq_device          3673  1 snd_seq
v4l1_compat            10250  2 uvcvideo,videodev
rfkill                 10264  3 bluetooth
snd                    34415  10 snd_hda_codec_realtek,snd_hda_intel,snd_hda_codec,snd_hwdep,snd_pcm,snd_seq,snd_timer,snd_seq_device
led_class               1757  0 
i2c_i801                6466  0 
soundcore               3450  1 snd
video                  14605  1 i915
wmi                     3575  0 
snd_page_alloc          5113  2 snd_hda_intel,snd_pcm
i2c_core               12787  6 i915,drm_kms_helper,drm,i2c_algo_bit,videodev,i2c_i801
output                  1204  1 video
processor              26335  5 acpi_cpufreq
battery                 3782  0 
button                  3598  1 i915
ac                      1640  0 
pcspkr                  1207  0 
evdev                   5609  14 
psmouse                44809  0 
serio_raw               2916  0 
ext4                  256872  1 
mbcache                 3762  2 ext3,ext4
jbd2                   56155  1 ext4
crc16                   1027  2 l2cap,ext4
sg                     19937  0 
sr_mod                 10770  1 
cdrom                  26487  1 sr_mod
sd_mod                 26005  6 
crc_t10dif              1012  1 sd_mod
usb_storage            30937  1 
ahci                   27426  4 
thermal                 9206  0 
libata                116181  1 ahci
thermal_sys             9378  3 video,processor,thermal
ehci_hcd               29105  0 
scsi_mod              104865  5 sg,sr_mod,sd_mod,usb_storage,libata
atl1c                  24168  0 
usbcore                99317  4 uvcvideo,usb_storage,ehci_hcd
nls_base                4541  7 isofs,nls_utf8,nls_cp437,vfat,fat,udf,usbcore
dmesg|tail -50 (just after the network via ethernet drop)
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[   30.886264] CPU3 attaching NULL sched-domain.
[   30.921429] CPU0 attaching sched-domain:
[   30.921434]  domain 0: span 0-1 level SIBLING
[   30.921438]   groups: group c40043b4 cpus 0 (cpu_power = 589) group c40443b4 cpus 1 (cpu_power = 589)
[   30.921447]   domain 1: span 0-3 level MC
[   30.921450]    groups: group c4004420 cpus 0-1 (cpu_power = 1178) group c4084420 cpus 2-3 (cpu_power = 1178)
[   30.921459] CPU1 attaching sched-domain:
[   30.921461]  domain 0: span 0-1 level SIBLING
[   30.921464]   groups: group c40443b4 cpus 1 (cpu_power = 589) group c40043b4 cpus 0 (cpu_power = 589)
[   30.921471]   domain 1: span 0-3 level MC
[   30.921474]    groups: group c4004420 cpus 0-1 (cpu_power = 1178) group c4084420 cpus 2-3 (cpu_power = 1178)
[   30.921481] CPU2 attaching sched-domain:
[   30.921484]  domain 0: span 2-3 level SIBLING
[   30.921486]   groups: group c40843b4 cpus 2 (cpu_power = 589) group c40c43b4 cpus 3 (cpu_power = 589)
[   30.921493]   domain 1: span 0-3 level MC
[   30.921496]    groups: group c4084420 cpus 2-3 (cpu_power = 1178) group c4004420 cpus 0-1 (cpu_power = 1178)
[   30.921503] CPU3 attaching sched-domain:
[   30.921505]  domain 0: span 2-3 level SIBLING
[   30.921508]   groups: group c40c43b4 cpus 3 (cpu_power = 589) group c40843b4 cpus 2 (cpu_power = 589)
[   30.921515]   domain 1: span 0-3 level MC
[   30.921518]    groups: group c4084420 cpus 2-3 (cpu_power = 1178) group c4004420 cpus 0-1 (cpu_power = 1178)
[   30.922128] CPU0 attaching NULL sched-domain.
[   30.922132] CPU1 attaching NULL sched-domain.
[   30.922134] CPU2 attaching NULL sched-domain.
[   30.922137] CPU3 attaching NULL sched-domain.
[   30.949450] CPU0 attaching sched-domain:
[   30.949461]  domain 0: span 0-1 level SIBLING
[   30.949468]   groups: group c40043b4 cpus 0 (cpu_power = 589) group c40443b4 cpus 1 (cpu_power = 589)
[   30.949488]   domain 1: span 0-3 level MC
[   30.949494]    groups: group c4004420 cpus 0-1 (cpu_power = 1178) group c4084420 cpus 2-3 (cpu_power = 1178)
[   30.949513] CPU1 attaching sched-domain:
[   30.949518]  domain 0: span 0-1 level SIBLING
[   30.949524]   groups: group c40443b4 cpus 1 (cpu_power = 589) group c40043b4 cpus 0 (cpu_power = 589)
[   30.949541]   domain 1: span 0-3 level MC
[   30.949546]    groups: group c4004420 cpus 0-1 (cpu_power = 1178) group c4084420 cpus 2-3 (cpu_power = 1178)
[   30.949563] CPU2 attaching sched-domain:
[   30.949568]  domain 0: span 2-3 level SIBLING
[   30.949574]   groups: group c40843b4 cpus 2 (cpu_power = 589) group c40c43b4 cpus 3 (cpu_power = 589)
[   30.949590]   domain 1: span 0-3 level MC
[   30.949595]    groups: group c4084420 cpus 2-3 (cpu_power = 1178) group c4004420 cpus 0-1 (cpu_power = 1178)
[   30.949612] CPU3 attaching sched-domain:
[   30.949617]  domain 0: span 2-3 level SIBLING
[   30.949622]   groups: group c40c43b4 cpus 3 (cpu_power = 589) group c40843b4 cpus 2 (cpu_power = 589)
[   30.949638]   domain 1: span 0-3 level MC
[   30.949643]    groups: group c4084420 cpus 2-3 (cpu_power = 1178) group c4004420 cpus 0-1 (cpu_power = 1178)
[   60.027755] FAT: utf8 is not a recommended IO charset for FAT filesystems, filesystem will be case sensitive!
[   62.393249] UDF-fs: No VRS found
[   62.393256] UDF-fs: No partition found (1)
[   62.485526] ISO 9660 Extensions: Microsoft Joliet Level 3
[   62.536888] ISOFS: changing to secondary root
Merci,

Sébastien