Hello everyone !
Il y a quelques mois de cela, je me convertissais au tout libre par
conviction profonde. Mon pc fixe a glorieusement passé ce cap. Il a été
assez facile pour moi de retrouver du matériel qui ne pose aucun problème
avec des drivers libres.
For a few month, I'm running a completely free system from my phone
(replicant hype !) to server.
All my computers have flawlessly made it and finding free compatible hardware
was rather simple.
But I still get stuck on my laptop. I changed my wifi mini pci card by the
one sold by thinkpinguin
(https://www.thinkpenguin.com/gnu-linux/penguin-wireless-n-half-height-mini-pcie-card).
Unfortunately, it doesn't woirk properly. T don't care about bluetooth
webcams and 3d acceleration but I really need wifi.
I'm looking for a solution for about one week and I can't find any way.
Sorry in advance, this post is pretty long !
The laptop : http://www.ldlc.com/fiche/PB00149167.html
my router : SFR BOX WPA2 personnal
kernel : Linux version 3.2.0-61-generic
########### Symptoms ###########
with le network-manager : The wifi connects but is monstuosly slow ! In fact,
after taking a look at my syslog, wpa_replicant is continuously connecting
and disconnecting (but withour ERROR). So the connection speed is slow, but
all system is too. Guess it's IRQ related.
with wicd : connection is much stabler but it's also shorter. After a few
seconds, if disconnects and never reconnect. Seems after a certain amount of
dat transmitted, it breaks down.
This is very random. It seemed that this is linked to the battery charge but
I can't really tell.
########### What did I try ###########
1) access point side, pretty much anything, security, no security, changing
canal, wifi mode : it always connect but with same problems
2) J'ai tenté plusieurs configuration différentes de l'alimentation et du
débit dans /etc/init.d/rc.local en utilisant
I try many configurations in /etc/init.d/rc.local using
ifconfig wlan0 up
iwconfig wlan0 txpower xxxmW
iwconfig wlan0 rate XM
ifconfig wlan0 down
Connection is better with 1M and 100mW with network-manager, nothing change
in wicd... and it's still bad.
3) I changed locale in /etc/default/crda
REGDOMAIN=FR (there was nothing before)... Oh yes I'm french.
4) I tried to disable hardware encryption too
(ath9k.conf en ajoutant nohcrypt=1) no changes but it connects quicker. After
connection, pretty much same problem !
########### Some system datas ###########
sudo lshw -C network
*-network
description: Interface réseau sans fil
produit: AR9287 Wireless Network Adapter (PCI-Express)
fabriquant: Qualcomm Atheros
identifiant matériel: 0
information bus: pci@0000:02:00.0
nom logique: wlan0
version: 01
numéro de série: 18:f4:6a:00:3c:81
bits: 64 bits
horloge: 33MHz
fonctionnalités: pm msi pciexpress bus_master cap_list ethernet physical
wireless
configuration: broadcast=yes driver=ath9k driverversion=3.2.0-61-generic
firmware=N/A ip=192.168.1.20 latency=0 link=yes multicast=yes wireless=IEEE
802.11bgn
ressources: irq:18 mémoire:f7e00000-f7e0ffff
lspci
00:00.0 Host bridge: Intel Corporation 3rd Gen Core processor DRAM Controller
(rev 09)
00:02.0 VGA compatible controller: Intel Corporation 3rd Gen Core processor
Graphics Controller (rev 09)
00:16.0 Communication controller: Intel Corporation 7 Series/C210 Series
Chipset Family MEI Controller #1 (rev 04)
00:1a.0 USB controller: Intel Corporation 7 Series/C210 Series Chipset Family
USB Enhanced Host Controller #2 (rev 04)
00:1b.0 Audio device: Intel Corporation 7 Series/C210 Series Chipset Family
High Definition Audio Controller (rev 04)
00:1c.0 PCI bridge: Intel Corporation 7 Series/C210 Series Chipset Family PCI
Express Root Port 1 (rev c4)
00:1c.2 PCI bridge: Intel Corporation 7 Series/C210 Series Chipset Family PCI
Express Root Port 3 (rev c4)
00:1c.3 PCI bridge: Intel Corporation 7 Series/C210 Series Chipset Family PCI
Express Root Port 4 (rev c4)
00:1d.0 USB controller: Intel Corporation 7 Series/C210 Series Chipset Family
USB Enhanced Host Controller #1 (rev 04)
00:1f.0 ISA bridge: Intel Corporation 7 Series Chipset Family LPC Controller
(rev 04)
00:1f.2 SATA controller: Intel Corporation 7 Series Chipset Family 6-port
SATA Controller [AHCI mode] (rev 04)
00:1f.3 SMBus: Intel Corporation 7 Series/C210 Series Chipset Family SMBus
Controller (rev 04)
02:00.0 Network controller: Qualcomm Atheros AR9287 Wireless Network Adapter
(PCI-Express) (rev 01)
03:00.0 Unassigned class [ff00]: Realtek Semiconductor Co., Ltd. Device 5286
(rev 01)
03:00.2 Ethernet controller: Realtek Semiconductor Co., Ltd.
RTL8101E/RTL8102E PCI Express Fast Ethernet controller (rev 06)
