Comment 52 for bug 1240940

Hello,

I have the same problem on my Lenovo Flex 2-14.

I tried the tip #38 and it seems to be a little more stable. But the drop outs are existent in present and the pingrate to my local router is very slow.

Another problem is that i'm not able to find or connect with another bluetoothdevice with this notebook. I'm not sure if that fact is in relationship with the wifi-problem.

Here are my additional parameters:

uname -a:
Linux Flex-2-14 3.13.0-34-generic #60-Ubuntu SMP Wed Aug 13 15:45:27 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux

lspci:
00:00.0 Host bridge: Intel Corporation Haswell-ULT DRAM Controller (rev 0b)
00:02.0 VGA compatible controller: Intel Corporation Haswell-ULT Integrated Graphics Controller (rev 0b)
00:03.0 Audio device: Intel Corporation Haswell-ULT HD Audio Controller (rev 0b)
00:14.0 USB controller: Intel Corporation Lynx Point-LP USB xHCI HC (rev 04)
00:16.0 Communication controller: Intel Corporation Lynx Point-LP HECI #0 (rev 04)
00:1b.0 Audio device: Intel Corporation Lynx Point-LP HD Audio Controller (rev 04)
00:1c.0 PCI bridge: Intel Corporation Lynx Point-LP PCI Express Root Port 1 (rev e4)
00:1c.2 PCI bridge: Intel Corporation Lynx Point-LP PCI Express Root Port 3 (rev e4)
00:1c.3 PCI bridge: Intel Corporation Lynx Point-LP PCI Express Root Port 4 (rev e4)
00:1c.4 PCI bridge: Intel Corporation Lynx Point-LP PCI Express Root Port 5 (rev e4)
00:1f.0 ISA bridge: Intel Corporation Lynx Point-LP LPC Controller (rev 04)
00:1f.2 SATA controller: Intel Corporation Lynx Point-LP SATA Controller 1 [AHCI mode] (rev 04)
00:1f.3 SMBus: Intel Corporation Lynx Point-LP SMBus Controller (rev 04)
02:00.0 Network controller: Realtek Semiconductor Co., Ltd. RTL8723BE PCIe Wireless Network Adapter
03:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller (rev 10)
04:00.0 3D controller: NVIDIA Corporation GM108M [GeForce 840M] (rev ff)

rfkill list:
0: ideapad_wlan: Wireless LAN
 Soft blocked: no
 Hard blocked: no
1: ideapad_bluetooth: Bluetooth
 Soft blocked: no
 Hard blocked: no
2: hci0: Bluetooth
 Soft blocked: no
 Hard blocked: no
3: phy0: Wireless LAN
 Soft blocked: no
 Hard blocked: no

lsmod:
Module Size Used by
ctr 13049 1
ccm 17773 1
bbswitch 13943 0
snd_hda_codec_hdmi 46254 1
snd_hda_codec_realtek 61438 1
hid_multitouch 17407 0
intel_rapl 18773 0
x86_pkg_temp_thermal 14205 0
intel_powerclamp 14705 0
coretemp 13435 0
kvm_intel 143060 0
kvm 451511 1 kvm_intel
crct10dif_pclmul 14289 0
crc32_pclmul 13113 0
snd_hda_intel 52355 5
snd_hda_codec 192906 3 snd_hda_codec_realtek,snd_hda_codec_hdmi,snd_hda_intel
ghash_clmulni_intel 13216 0
snd_seq_midi 13324 0
snd_hwdep 13602 1 snd_hda_codec
snd_seq_midi_event 14899 1 snd_seq_midi
snd_rawmidi 30144 1 snd_seq_midi
arc4 12608 2
aesni_intel 55624 2
usbhid 52570 0
hid 106148 2 hid_multitouch,usbhid
aes_x86_64 17131 1 aesni_intel
lrw 13286 1 aesni_intel
snd_pcm 102099 3 snd_hda_codec_hdmi,snd_hda_codec,snd_hda_intel
gf128mul 14951 1 lrw
rfcomm 69160 8
rtl8723be 85118 0
glue_helper 13990 1 aesni_intel
ablk_helper 13597 1 aesni_intel
cryptd 20359 3 ghash_clmulni_intel,aesni_intel,ablk_helper
btcoexist 50304 1 rtl8723be
bnep 19624 2
rtl8723_common 23361 1 rtl8723be
rtl_pci 26690 1 rtl8723be
snd_page_alloc 18710 2 snd_pcm,snd_hda_intel
rtlwifi 63475 2 rtl_pci,rtl8723be
uvcvideo 80885 0
joydev 17381 0
serio_raw 13462 0
mac80211 630653 3 rtl_pci,rtlwifi,rtl8723be
videobuf2_vmalloc 13216 1 uvcvideo
videobuf2_memops 13362 1 videobuf2_vmalloc
videobuf2_core 40664 1 uvcvideo
videodev 134688 2 uvcvideo,videobuf2_core
btusb 32412 0
bluetooth 391196 22 bnep,btusb,rfcomm
cfg80211 484040 2 mac80211,rtlwifi
snd_seq 61560 2 snd_seq_midi_event,snd_seq_midi
i915 783805 5
snd_seq_device 14497 3 snd_seq,snd_rawmidi,snd_seq_midi
wmi 19177 0
snd_timer 29482 2 snd_pcm,snd_seq
ideapad_laptop 18216 0
snd 69238 21 snd_hda_codec_realtek,snd_hwdep,snd_timer,snd_hda_codec_hdmi,snd_pcm,snd_seq,snd_rawmidi,snd_hda_codec,snd_hda_intel,snd_seq_device,snd_seq_midi
sparse_keymap 13948 1 ideapad_laptop
drm_kms_helper 53081 1 i915
binfmt_misc 17468 1
mei_me 18627 0
soundcore 12680 1 snd
video 19476 1 i915
drm 303102 4 i915,drm_kms_helper
mac_hid 13205 0
mei 82276 1 mei_me
i2c_algo_bit 13413 1 i915
lpc_ich 21080 0
parport_pc 32701 0
ppdev 17671 0
lp 17759 0
parport 42348 3 lp,ppdev,parport_pc
psmouse 106678 0
ahci 25819 2
libahci 32560 1 ahci
r8169 67581 0
mii 13934 1 r8169

Greetings!