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[resolved] [duplicate] I'm a Ubuntu 15.04 vivid 64 bits user I've got so many problem since 15.04 with my wifi, so boring :( Connection is unstable, dropping packet, losing connection after auto suspend, etc... On boot, WiFi seams correct, but after some times (irregular) it gone away. Often, status bar tells me "Wifi is not ready" or "wifi is deactivated" (no physical button...)

Please some help will be great Some information below:

lspci -k -nn | grep -A 3 -i net 

01:00.0 Network controller [0280]: Intel Corporation Wireless 7260
[8086:08b1] (rev bb)    Subsystem: Intel Corporation Dual Band
Wireless-AC 7260 [8086:c070]    Kernel driver in use: iwlwifi


sudo rfkill list 
0: phy0: Wireless LAN
    Soft blocked: no
    Hard blocked: no
2: hci0: Bluetooth
    Soft blocked: no
    Hard blocked: no

My dmesg is full of

[ 9330.808954] iwlwifi 0000:01:00.0: L1 Disabled - LTR Disabled
[ 9330.948660] iwlwifi 0000:01:00.0: L1 Disabled - LTR Disabled
[ 9336.755375] iwlwifi 0000:01:00.0: Failed to load firmware chunk!
[ 9336.755388] iwlwifi 0000:01:00.0: Could not load the [0] uCode section
[ 9336.755392] iwlwifi 0000:01:00.0: Failed to start RT ucode: -110
[ 9338.558578] iwlwifi 0000:01:00.0: Failing on timeout while stopping DMA channel 0 [0x5a5a5a5a]
[ 9340.378335] iwlwifi 0000:01:00.0: Failing on timeout while stopping DMA channel 2 [0x5a5a5a5a]
[ 9342.231506] iwlwifi 0000:01:00.0: Failing on timeout while stopping DMA channel 5 [0x5a5a5a5a]
[ 9344.049952] iwlwifi 0000:01:00.0: Failing on timeout while stopping DMA channel 7 [0x5a5a5a5a]
[ 9330.808954] iwlwifi 0000:01:00.0: L1 Disabled - LTR Disabled
[ 9330.948660] iwlwifi 0000:01:00.0: L1 Disabled - LTR Disabled
[ 9336.755375] iwlwifi 0000:01:00.0: Failed to load firmware chunk!
[ 9336.755388] iwlwifi 0000:01:00.0: Could not load the [0] uCode section
[ 9336.755392] iwlwifi 0000:01:00.0: Failed to start RT ucode: -110
[ 9338.558578] iwlwifi 0000:01:00.0: Failing on timeout while stopping DMA channel 0 [0x5a5a5a5a]
[ 9340.378335] iwlwifi 0000:01:00.0: Failing on timeout while stopping DMA channel 2 [0x5a5a5a5a]
[ 9342.231506] iwlwifi 0000:01:00.0: Failing on timeout while stopping DMA channel 5 [0x5a5a5a5a]
[ 9344.049952] iwlwifi 0000:01:00.0: Failing on timeout while stopping DMA channel 7 [0x5a5a5a5a]

I have blacklisted ideapad_laptop in /etc/modprobe.d/blacklist.conf

I don't have a /etc/modprobe.d/iwlmvm.conf as I want to use Wifi 11N...

I'm using /lib/firmware/iwlwifi-7260-13.ucode (cheating the OS renaming it .10)

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  • 1
    possible duplicate of Wifi losing connection, weak signal, Intel 7260 adapter
    – Pilot6
    Sep 26, 2015 at 18:15
  • Thank you Pilot6. I just try power_save=0 in a new file /etc/modprobe.d/iwlwifi-opt.conf I want to keep N and HW encryption is possible... Will stay in touch. The wireless module is a new one I brought and install in my enovo yago 2 pro (to avoid problem...but no chance...)
    – greee
    Sep 26, 2015 at 19:55
  • THANKS @Pilot6 It seems after a night my connecion is still there !! But really, I don't understand why such a bug is still present is such a widely sell wifi component ! I will keep a eye for some days and will mark my question as answered
    – greee
    Sep 27, 2015 at 10:04
  • You can also try 14 firmware. And it is wrong to rename it to 10. It will not be used this way, if 12 is present. Rename it to 12. This halped one user. Maybe you will not need to remove powersave. If that works, please write it as an answer and accept it. I will bookmark it and direct other similar questions to this answer.
    – Pilot6
    Sep 27, 2015 at 10:09
  • iwlwifi-7260-14 is not present for me (only 13) I run (uname -a) Linux yoga 3.19.0-28-generic #30-Ubuntu SMP Mon Aug 31 15:52:51 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux
    – greee
    Sep 27, 2015 at 12:10

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