Hi,
I am seeing this problem with
linux-image-4.15.0-0.bpo.2-amd64 4.15.11-1~bpo9+1 amd64 and firmware-iwlwifi
20170823-1~bpo9+1, and with their counterparts from Stable on my
XPS 13 from around 2013.
FWIW, on some networks, I have no trouble connecting, but on others, it just
won't work at all. I've tried this backport version after losing
connectivity with the stable package.
$ journalctl -b 0 | grep iwlwifi | head
Apr 30 23:27:08 debian kernel: iwlwifi 0000:01:00.0: can't disable ASPM; OS
doesn't have ASPM control
Apr 30 23:27:08 debian kernel: iwlwifi 0000:01:00.0: firmware: direct-loading
firmware iwlwifi-6000g2b-6.ucode
Apr 30 23:27:08 debian kernel: iwlwifi 0000:01:00.0: loaded firmware version
18.168.6.1 op_mode iwldvm
Apr 30 23:27:08 debian kernel: iwlwifi 0000:01:00.0: CONFIG_IWLWIFI_DEBUG
disabled
Apr 30 23:27:08 debian kernel: iwlwifi 0000:01:00.0: CONFIG_IWLWIFI_DEBUGFS
disabled
Apr 30 23:27:08 debian kernel: iwlwifi 0000:01:00.0:
CONFIG_IWLWIFI_DEVICE_TRACING disabled
Apr 30 23:27:08 debian kernel: iwlwifi 0000:01:00.0: Detected Intel(R)
Centrino(R) Advanced-N 6235 AGN, REV=0xB0
Apr 30 23:27:09 debian kernel: iwlwifi 0000:01:00.0: Radio type=0x2-0x1-0x0
Apr 30 23:27:09 debian kernel: iwlwifi 0000:01:00.0: Radio type=0x2-0x1-0x0
Apr 30 23:27:38 debian kernel: iwlwifi 0000:01:00.0: Radio type=0x2-0x1-0x0
$ iwconfig wlan0
wlan0 IEEE 802.11 ESSID:off/any
Mode:Managed Frequency:5.22 GHz Access Point: Not-Associated
Tx-Power=15 dBm
Retry short limit:7 RTS thr:off Fragment thr:off
Power Management:off
Here's one such section from the logs, I get them every few seconds:
Apr 30 23:43:30 debian kernel: [ 995.983609] ieee80211 phy0: Hardware restart
was requested
Apr 30 23:43:30 debian kernel: [ 995.996648] iwlwifi 0000:01:00.0: Radio
type=0x2-0x1-0x0
Apr 30 23:43:30 debian kernel: [ 996.297641] iwlwifi 0000:01:00.0: Radio
type=0x2-0x1-0x0
Apr 30 23:43:38 debian kernel: [ 1003.669572] iwlwifi 0000:01:00.0: Microcode
SW error detected. Restarting 0x2000000.
Apr 30 23:43:38 debian kernel: [ 1003.669589] iwlwifi 0000:01:00.0: Loaded
firmware version: 18.168.6.1
Apr 30 23:43:38 debian kernel: [ 1003.669781] iwlwifi 0000:01:00.0: Start IWL
Error Log Dump:
Apr 30 23:43:38 debian kernel: [ 1003.669789] iwlwifi 0000:01:00.0: Status:
0x0000004C, count: 6
Apr 30 23:43:38 debian kernel: [ 1003.669797] iwlwifi 0000:01:00.0: 0x00000034
| NMI_INTERRUPT_WDG
Apr 30 23:43:38 debian kernel: [ 1003.669803] iwlwifi 0000:01:00.0: 0x00010564
| uPc
Apr 30 23:43:38 debian kernel: [ 1003.669810] iwlwifi 0000:01:00.0: 0x0001054E
| branchlink1
Apr 30 23:43:38 debian kernel: [ 1003.669816] iwlwifi 0000:01:00.0: 0x00010580
| branchlink2
Apr 30 23:43:38 debian kernel: [ 1003.669824] iwlwifi 0000:01:00.0: 0x0000DBEA
| interruptlink1
Apr 30 23:43:38 debian kernel: [ 1003.669831] iwlwifi 0000:01:00.0: 0x0001CB38
| interruptlink2
Apr 30 23:43:38 debian kernel: [ 1003.669837] iwlwifi 0000:01:00.0: 0x00000002
| data1
Apr 30 23:43:38 debian kernel: [ 1003.669844] iwlwifi 0000:01:00.0: 0x07030000
| data2
Apr 30 23:43:38 debian kernel: [ 1003.669851] iwlwifi 0000:01:00.0: 0x0002617C
| line
Apr 30 23:43:38 debian kernel: [ 1003.669858] iwlwifi 0000:01:00.0: 0x11C0121E
| beacon time
Apr 30 23:43:38 debian kernel: [ 1003.669865] iwlwifi 0000:01:00.0: 0x9B5B2DE2
| tsf low
Apr 30 23:43:38 debian kernel: [ 1003.669871] iwlwifi 0000:01:00.0: 0x00000055
| tsf hi
Apr 30 23:43:38 debian kernel: [ 1003.669876] iwlwifi 0000:01:00.0: 0x00000000
| time gp1
Apr 30 23:43:38 debian kernel: [ 1003.669882] iwlwifi 0000:01:00.0: 0x0070585B
| time gp2
Apr 30 23:43:38 debian kernel: [ 1003.669889] iwlwifi 0000:01:00.0: 0x00000000
| time gp3
Apr 30 23:43:38 debian kernel: [ 1003.669896] iwlwifi 0000:01:00.0: 0x754312A8
| uCode version
Apr 30 23:43:38 debian kernel: [ 1003.669905] iwlwifi 0000:01:00.0: 0x000000B0
| hw version
Apr 30 23:43:38 debian kernel: [ 1003.669911] iwlwifi 0000:01:00.0: 0x00484B00
| board version
Apr 30 23:43:38 debian kernel: [ 1003.669918] iwlwifi 0000:01:00.0: 0x0207001C
| hcmd
Apr 30 23:43:38 debian kernel: [ 1003.669924] iwlwifi 0000:01:00.0: 0xA7863002
| isr0
Apr 30 23:43:38 debian kernel: [ 1003.669930] iwlwifi 0000:01:00.0: 0x11898000
| isr1
Apr 30 23:43:38 debian kernel: [ 1003.669935] iwlwifi 0000:01:00.0: 0x00000E17
| isr2
Apr 30 23:43:38 debian kernel: [ 1003.669941] iwlwifi 0000:01:00.0: 0x8543FCC0
| isr3
Apr 30 23:43:38 debian kernel: [ 1003.669947] iwlwifi 0000:01:00.0: 0x00000000
| isr4
Apr 30 23:43:38 debian kernel: [ 1003.669954] iwlwifi 0000:01:00.0: 0x00804110
| isr_pref
Apr 30 23:43:38 debian kernel: [ 1003.669961] iwlwifi 0000:01:00.0: 0x0002617C
| wait_event
Apr 30 23:43:38 debian kernel: [ 1003.669969] iwlwifi 0000:01:00.0: 0x000000B4
| l2p_control
Apr 30 23:43:38 debian kernel: [ 1003.669976] iwlwifi 0000:01:00.0: 0x000000A4
| l2p_duration
Apr 30 23:43:38 debian kernel: [ 1003.669983] iwlwifi 0000:01:00.0: 0x0000000F
| l2p_mhvalid
Apr 30 23:43:38 debian kernel: [ 1003.669989] iwlwifi 0000:01:00.0: 0x001050C0
| l2p_addr_match
Apr 30 23:43:38 debian kernel: [ 1003.669996] iwlwifi 0000:01:00.0: 0x00000005
| lmpm_pmg_sel
Apr 30 23:43:38 debian kernel: [ 1003.670004] iwlwifi 0000:01:00.0: 0x13011136
| timestamp
Apr 30 23:43:38 debian kernel: [ 1003.670009] iwlwifi 0000:01:00.0: 0x0000A8C0
| flow_handler
Apr 30 23:43:38 debian kernel: [ 1003.670105] iwlwifi 0000:01:00.0: Start IWL
Event Log Dump: display last 1 entries
Apr 30 23:43:38 debian kernel: [ 1003.670160] iwlwifi 0000:01:00.0:
EVT_LOGT:0007362647:0x0000010c:0123
Apr 30 23:43:38 debian kernel: [ 1003.682688] ieee80211 phy0: Hardware restart
was requested
Cheers,
Toni
-- System Information:
Debian Release: 9.4
APT prefers stable
APT policy: (990, 'stable'), (500, 'unstable'), (500, 'testing')
Architecture: amd64 (x86_64)
Foreign Architectures: i386
Kernel: Linux 4.15.0-0.bpo.2-amd64 (SMP w/4 CPU cores)
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.utf8 (charmap=UTF-8),
LANGUAGE=en_US:en (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)
firmware-iwlwifi depends on no packages.
firmware-iwlwifi recommends no packages.
Versions of packages firmware-iwlwifi suggests:
ii initramfs-tools 0.130
-- no debconf information
$ 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)
00:14.0 USB controller: Intel Corporation 7 Series/C210 Series Chipset Family
USB xHCI Host Controller (rev 04)
00:16.0 Communication controller: Intel Corporation 7 Series/C216 Chipset
Family MEI Controller #1 (rev 04)
00:1a.0 USB controller: Intel Corporation 7 Series/C216 Chipset Family USB
Enhanced Host Controller #2 (rev 04)
00:1b.0 Audio device: Intel Corporation 7 Series/C216 Chipset Family High
Definition Audio Controller (rev 04)
00:1c.0 PCI bridge: Intel Corporation 7 Series/C216 Chipset Family PCI Express
Root Port 1 (rev c4)
00:1d.0 USB controller: Intel Corporation 7 Series/C216 Chipset Family USB
Enhanced Host Controller #1 (rev 04)
00:1f.0 ISA bridge: Intel Corporation QS77 Express Chipset 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/C216 Chipset Family SMBus Controller
(rev 04)
01:00.0 Network controller: Intel Corporation Centrino Advanced-N 6235 (rev 24)
