[Kernel-packages] [Bug 1830883] Re: iwlwifi Intel 8265 firmware crashing in powersave mode
May I suggest you leave a comment on the blog to prevent the next reader from doing the same thing? -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux-firmware in Ubuntu. https://bugs.launchpad.net/bugs/1830883 Title: iwlwifi Intel 8265 firmware crashing in powersave mode Status in linux-firmware package in Ubuntu: Invalid Bug description: When I disconnect my AC adapter or run `sudo tlp bat` to switch to battery mode my wifi stops working. Reconnecting the AC adapter or running `sudo tlp ac` returns the wifi adapter to a functioning state. I use the default TLP configuration without modifications and at first I was thinking that this is a bug in TLP. The FAQs already have an entry about this and state that this is due to the "kernel driver does not implement power saving properly" [1]. This is why I'm reporting the issue here. I'm using Ubuntu Disco and I remember this working in previous Ubuntu versions / kernels. This happened on kernel 5.0.0-15-generic but also on the 5.1.5-050105-generic mainline kernel. Below is a snippet of /var/log/syslog at the moment of switching TLP to battery mode. Battery mode was activated at 11:25 and AC mode was re-activated around 11:27. Please let me know if this is actually the right place to submit this bug report and whether I can provide more information. --- May 29 11:23:40 x1cbn systemd-resolved[1037]: message repeated 3 times: [ Server returned error NXDOMAIN, mitigating potential DNS violation DVE-2018-0001, retrying transaction with reduced feature level UDP.] May 29 11:23:41 x1cbn colord[1285]: failed to get session [pid 1158]: Keine Daten verfügbar May 29 11:25:37 x1cbn wpa_supplicant[1144]: wlp2s0: CTRL-EVENT-SCAN-FAILED ret=-110 May 29 11:25:37 x1cbn geoclue[1741]: WiFi scan failed May 29 11:25:37 x1cbn kernel: [ 4645.773659] iwlwifi :02:00.0: Error sending SCAN_REQ_UMAC: time out after 2000ms. May 29 11:25:37 x1cbn kernel: [ 4645.773670] iwlwifi :02:00.0: Current CMD queue read_ptr 229 write_ptr 230 May 29 11:25:37 x1cbn kernel: [ 4645.775119] iwlwifi :02:00.0: Start IWL Error Log Dump: May 29 11:25:37 x1cbn kernel: [ 4645.775125] iwlwifi :02:00.0: Status: 0x0100, count: 6 May 29 11:25:37 x1cbn kernel: [ 4645.775130] iwlwifi :02:00.0: Loaded firmware version: 36.9f0a2d68.0 May 29 11:25:37 x1cbn kernel: [ 4645.775137] iwlwifi :02:00.0: 0x0084 | NMI_INTERRUPT_UNKNOWN May 29 11:25:37 x1cbn kernel: [ 4645.775142] iwlwifi :02:00.0: 0x0200 | trm_hw_status0 May 29 11:25:37 x1cbn kernel: [ 4645.775147] iwlwifi :02:00.0: 0x | trm_hw_status1 May 29 11:25:37 x1cbn kernel: [ 4645.775152] iwlwifi :02:00.0: 0x0002485C | branchlink2 May 29 11:25:37 x1cbn kernel: [ 4645.775157] iwlwifi :02:00.0: 0x0003A7CA | interruptlink1 May 29 11:25:37 x1cbn kernel: [ 4645.775161] iwlwifi :02:00.0: 0x5D56 | interruptlink2 May 29 11:25:37 x1cbn kernel: [ 4645.775166] iwlwifi :02:00.0: 0x | data1 May 29 11:25:37 x1cbn kernel: [ 4645.775171] iwlwifi :02:00.0: 0x0080 | data2 May 29 11:25:37 x1cbn kernel: [ 4645.775175] iwlwifi :02:00.0: 0x07A3 | data3 May 29 11:25:37 x1cbn kernel: [ 4645.775180] iwlwifi :02:00.0: 0xBBC109E2 | beacon time May 29 11:25:37 x1cbn kernel: [ 4645.775185] iwlwifi :02:00.0: 0x10C87621 | tsf low May 29 11:25:37 x1cbn kernel: [ 4645.775190] iwlwifi :02:00.0: 0x019F | tsf hi May 29 11:25:37 x1cbn kernel: [ 4645.775194] iwlwifi :02:00.0: 0x | time gp1 May 29 11:25:37 x1cbn kernel: [ 4645.775199] iwlwifi :02:00.0: 0xCC95B750 | time gp2 May 29 11:25:37 x1cbn kernel: [ 4645.775204] iwlwifi :02:00.0: 0x0001 | uCode revision type May 29 11:25:37 x1cbn kernel: [ 4645.775209] iwlwifi :02:00.0: 0x0024 | uCode version major May 29 11:25:37 x1cbn kernel: [ 4645.775214] iwlwifi :02:00.0: 0x9F0A2D68 | uCode version minor May 29 11:25:37 x1cbn kernel: [ 4645.775219] iwlwifi :02:00.0: 0x0230 | hw version May 29 11:25:37 x1cbn kernel: [ 4645.775224] iwlwifi :02:00.0: 0x0008 | board version May 29 11:25:37 x1cbn kernel: [ 4645.775228] iwlwifi :02:00.0: 0x001C | hcmd May 29 11:25:37 x1cbn kernel: [ 4645.775233] iwlwifi :02:00.0: 0x24022000 | isr0 May 29 11:25:37 x1cbn kernel: [ 4645.775238] iwlwifi :02:00.0: 0x0180 | isr1 May 29 11:25:37 x1cbn kernel: [ 4645.775242] iwlwifi :02:00.0: 0x0800180A | isr2 May 29 11:25:37 x1cbn kernel: [ 4645.775247] iwlwifi :02:00.0: 0x00417CC0 | isr3 May 29 11:25:37 x1cbn kernel: [ 4645.775252] iwlwifi :02:00.0: 0x | isr4 May 29 11:25:37 x1cbn kernel: [ 4645.775257] iwlwifi :02:00.0: 0x0AD9001C | last cmd Id May 29 11:25:37 x1cbn kernel: [ 4645.775262] iwlwifi :02:00.0: 0x | wait_event May 29 11:25:37 x1cbn kernel:
[Kernel-packages] [Bug 1830883] Re: iwlwifi Intel 8265 firmware crashing in powersave mode
No problem, glad we were able to help get it resolved. ** Changed in: linux-firmware (Ubuntu) Status: Incomplete => Invalid -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux-firmware in Ubuntu. https://bugs.launchpad.net/bugs/1830883 Title: iwlwifi Intel 8265 firmware crashing in powersave mode Status in linux-firmware package in Ubuntu: Invalid Bug description: When I disconnect my AC adapter or run `sudo tlp bat` to switch to battery mode my wifi stops working. Reconnecting the AC adapter or running `sudo tlp ac` returns the wifi adapter to a functioning state. I use the default TLP configuration without modifications and at first I was thinking that this is a bug in TLP. The FAQs already have an entry about this and state that this is due to the "kernel driver does not implement power saving properly" [1]. This is why I'm reporting the issue here. I'm using Ubuntu Disco and I remember this working in previous Ubuntu versions / kernels. This happened on kernel 5.0.0-15-generic but also on the 5.1.5-050105-generic mainline kernel. Below is a snippet of /var/log/syslog at the moment of switching TLP to battery mode. Battery mode was activated at 11:25 and AC mode was re-activated around 11:27. Please let me know if this is actually the right place to submit this bug report and whether I can provide more information. --- May 29 11:23:40 x1cbn systemd-resolved[1037]: message repeated 3 times: [ Server returned error NXDOMAIN, mitigating potential DNS violation DVE-2018-0001, retrying transaction with reduced feature level UDP.] May 29 11:23:41 x1cbn colord[1285]: failed to get session [pid 1158]: Keine Daten verfügbar May 29 11:25:37 x1cbn wpa_supplicant[1144]: wlp2s0: CTRL-EVENT-SCAN-FAILED ret=-110 May 29 11:25:37 x1cbn geoclue[1741]: WiFi scan failed May 29 11:25:37 x1cbn kernel: [ 4645.773659] iwlwifi :02:00.0: Error sending SCAN_REQ_UMAC: time out after 2000ms. May 29 11:25:37 x1cbn kernel: [ 4645.773670] iwlwifi :02:00.0: Current CMD queue read_ptr 229 write_ptr 230 May 29 11:25:37 x1cbn kernel: [ 4645.775119] iwlwifi :02:00.0: Start IWL Error Log Dump: May 29 11:25:37 x1cbn kernel: [ 4645.775125] iwlwifi :02:00.0: Status: 0x0100, count: 6 May 29 11:25:37 x1cbn kernel: [ 4645.775130] iwlwifi :02:00.0: Loaded firmware version: 36.9f0a2d68.0 May 29 11:25:37 x1cbn kernel: [ 4645.775137] iwlwifi :02:00.0: 0x0084 | NMI_INTERRUPT_UNKNOWN May 29 11:25:37 x1cbn kernel: [ 4645.775142] iwlwifi :02:00.0: 0x0200 | trm_hw_status0 May 29 11:25:37 x1cbn kernel: [ 4645.775147] iwlwifi :02:00.0: 0x | trm_hw_status1 May 29 11:25:37 x1cbn kernel: [ 4645.775152] iwlwifi :02:00.0: 0x0002485C | branchlink2 May 29 11:25:37 x1cbn kernel: [ 4645.775157] iwlwifi :02:00.0: 0x0003A7CA | interruptlink1 May 29 11:25:37 x1cbn kernel: [ 4645.775161] iwlwifi :02:00.0: 0x5D56 | interruptlink2 May 29 11:25:37 x1cbn kernel: [ 4645.775166] iwlwifi :02:00.0: 0x | data1 May 29 11:25:37 x1cbn kernel: [ 4645.775171] iwlwifi :02:00.0: 0x0080 | data2 May 29 11:25:37 x1cbn kernel: [ 4645.775175] iwlwifi :02:00.0: 0x07A3 | data3 May 29 11:25:37 x1cbn kernel: [ 4645.775180] iwlwifi :02:00.0: 0xBBC109E2 | beacon time May 29 11:25:37 x1cbn kernel: [ 4645.775185] iwlwifi :02:00.0: 0x10C87621 | tsf low May 29 11:25:37 x1cbn kernel: [ 4645.775190] iwlwifi :02:00.0: 0x019F | tsf hi May 29 11:25:37 x1cbn kernel: [ 4645.775194] iwlwifi :02:00.0: 0x | time gp1 May 29 11:25:37 x1cbn kernel: [ 4645.775199] iwlwifi :02:00.0: 0xCC95B750 | time gp2 May 29 11:25:37 x1cbn kernel: [ 4645.775204] iwlwifi :02:00.0: 0x0001 | uCode revision type May 29 11:25:37 x1cbn kernel: [ 4645.775209] iwlwifi :02:00.0: 0x0024 | uCode version major May 29 11:25:37 x1cbn kernel: [ 4645.775214] iwlwifi :02:00.0: 0x9F0A2D68 | uCode version minor May 29 11:25:37 x1cbn kernel: [ 4645.775219] iwlwifi :02:00.0: 0x0230 | hw version May 29 11:25:37 x1cbn kernel: [ 4645.775224] iwlwifi :02:00.0: 0x0008 | board version May 29 11:25:37 x1cbn kernel: [ 4645.775228] iwlwifi :02:00.0: 0x001C | hcmd May 29 11:25:37 x1cbn kernel: [ 4645.775233] iwlwifi :02:00.0: 0x24022000 | isr0 May 29 11:25:37 x1cbn kernel: [ 4645.775238] iwlwifi :02:00.0: 0x0180 | isr1 May 29 11:25:37 x1cbn kernel: [ 4645.775242] iwlwifi :02:00.0: 0x0800180A | isr2 May 29 11:25:37 x1cbn kernel: [ 4645.775247] iwlwifi :02:00.0: 0x00417CC0 | isr3 May 29 11:25:37 x1cbn kernel: [ 4645.775252] iwlwifi :02:00.0: 0x | isr4 May 29 11:25:37 x1cbn kernel: [ 4645.775257] iwlwifi :02:00.0: 0x0AD9001C | last cmd Id May 29 11:25:37 x1cbn kernel: [ 4645.775262] iwlwifi :02:00.0: 0x | wait_event
[Kernel-packages] [Bug 1830883] Re: iwlwifi Intel 8265 firmware crashing in powersave mode
Dear Seth, dear Emmanuel, please excuse me for having opened this ticket. Indeed, I found a configuration which (among other things) activated d0i3 that I copied and pasted verbatim from a blog post. Sorry for causing such a mess. Although I'm thankful for your time and helping me fix my configuration. -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux-firmware in Ubuntu. https://bugs.launchpad.net/bugs/1830883 Title: iwlwifi Intel 8265 firmware crashing in powersave mode Status in linux-firmware package in Ubuntu: Incomplete Bug description: When I disconnect my AC adapter or run `sudo tlp bat` to switch to battery mode my wifi stops working. Reconnecting the AC adapter or running `sudo tlp ac` returns the wifi adapter to a functioning state. I use the default TLP configuration without modifications and at first I was thinking that this is a bug in TLP. The FAQs already have an entry about this and state that this is due to the "kernel driver does not implement power saving properly" [1]. This is why I'm reporting the issue here. I'm using Ubuntu Disco and I remember this working in previous Ubuntu versions / kernels. This happened on kernel 5.0.0-15-generic but also on the 5.1.5-050105-generic mainline kernel. Below is a snippet of /var/log/syslog at the moment of switching TLP to battery mode. Battery mode was activated at 11:25 and AC mode was re-activated around 11:27. Please let me know if this is actually the right place to submit this bug report and whether I can provide more information. --- May 29 11:23:40 x1cbn systemd-resolved[1037]: message repeated 3 times: [ Server returned error NXDOMAIN, mitigating potential DNS violation DVE-2018-0001, retrying transaction with reduced feature level UDP.] May 29 11:23:41 x1cbn colord[1285]: failed to get session [pid 1158]: Keine Daten verfügbar May 29 11:25:37 x1cbn wpa_supplicant[1144]: wlp2s0: CTRL-EVENT-SCAN-FAILED ret=-110 May 29 11:25:37 x1cbn geoclue[1741]: WiFi scan failed May 29 11:25:37 x1cbn kernel: [ 4645.773659] iwlwifi :02:00.0: Error sending SCAN_REQ_UMAC: time out after 2000ms. May 29 11:25:37 x1cbn kernel: [ 4645.773670] iwlwifi :02:00.0: Current CMD queue read_ptr 229 write_ptr 230 May 29 11:25:37 x1cbn kernel: [ 4645.775119] iwlwifi :02:00.0: Start IWL Error Log Dump: May 29 11:25:37 x1cbn kernel: [ 4645.775125] iwlwifi :02:00.0: Status: 0x0100, count: 6 May 29 11:25:37 x1cbn kernel: [ 4645.775130] iwlwifi :02:00.0: Loaded firmware version: 36.9f0a2d68.0 May 29 11:25:37 x1cbn kernel: [ 4645.775137] iwlwifi :02:00.0: 0x0084 | NMI_INTERRUPT_UNKNOWN May 29 11:25:37 x1cbn kernel: [ 4645.775142] iwlwifi :02:00.0: 0x0200 | trm_hw_status0 May 29 11:25:37 x1cbn kernel: [ 4645.775147] iwlwifi :02:00.0: 0x | trm_hw_status1 May 29 11:25:37 x1cbn kernel: [ 4645.775152] iwlwifi :02:00.0: 0x0002485C | branchlink2 May 29 11:25:37 x1cbn kernel: [ 4645.775157] iwlwifi :02:00.0: 0x0003A7CA | interruptlink1 May 29 11:25:37 x1cbn kernel: [ 4645.775161] iwlwifi :02:00.0: 0x5D56 | interruptlink2 May 29 11:25:37 x1cbn kernel: [ 4645.775166] iwlwifi :02:00.0: 0x | data1 May 29 11:25:37 x1cbn kernel: [ 4645.775171] iwlwifi :02:00.0: 0x0080 | data2 May 29 11:25:37 x1cbn kernel: [ 4645.775175] iwlwifi :02:00.0: 0x07A3 | data3 May 29 11:25:37 x1cbn kernel: [ 4645.775180] iwlwifi :02:00.0: 0xBBC109E2 | beacon time May 29 11:25:37 x1cbn kernel: [ 4645.775185] iwlwifi :02:00.0: 0x10C87621 | tsf low May 29 11:25:37 x1cbn kernel: [ 4645.775190] iwlwifi :02:00.0: 0x019F | tsf hi May 29 11:25:37 x1cbn kernel: [ 4645.775194] iwlwifi :02:00.0: 0x | time gp1 May 29 11:25:37 x1cbn kernel: [ 4645.775199] iwlwifi :02:00.0: 0xCC95B750 | time gp2 May 29 11:25:37 x1cbn kernel: [ 4645.775204] iwlwifi :02:00.0: 0x0001 | uCode revision type May 29 11:25:37 x1cbn kernel: [ 4645.775209] iwlwifi :02:00.0: 0x0024 | uCode version major May 29 11:25:37 x1cbn kernel: [ 4645.775214] iwlwifi :02:00.0: 0x9F0A2D68 | uCode version minor May 29 11:25:37 x1cbn kernel: [ 4645.775219] iwlwifi :02:00.0: 0x0230 | hw version May 29 11:25:37 x1cbn kernel: [ 4645.775224] iwlwifi :02:00.0: 0x0008 | board version May 29 11:25:37 x1cbn kernel: [ 4645.775228] iwlwifi :02:00.0: 0x001C | hcmd May 29 11:25:37 x1cbn kernel: [ 4645.775233] iwlwifi :02:00.0: 0x24022000 | isr0 May 29 11:25:37 x1cbn kernel: [ 4645.775238] iwlwifi :02:00.0: 0x0180 | isr1 May 29 11:25:37 x1cbn kernel: [ 4645.775242] iwlwifi :02:00.0: 0x0800180A | isr2 May 29 11:25:37 x1cbn kernel: [ 4645.775247] iwlwifi :02:00.0: 0x00417CC0 | isr3 May 29 11:25:37 x1cbn kernel: [ 4645.775252] iwlwifi :02:00.0: 0x | isr4 May 29
Re: [Kernel-packages] [Bug 1830883] Re: iwlwifi Intel 8265 firmware crashing in powersave mode
On Wed, Jun 05, 2019 at 07:36:50AM -, Emmanuel Grumbach wrote: > Hi Seth, > > we debugged this and we found out that d0i3 was not disabled in iwlwifi. > This is a kind of power saving thing that requires integration with the > platform / kernel that should be enabled only for specific platform. Not > something that should be enabled in a distribution kernel. > > https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/tree/drivers/net/wireless/intel/iwlwifi > /iwl-drv.c?h=linux-5.1.y#n1670 > > In mainline, it is disabled by default. > Not sure what happened here. It's also disabled by default in our kernels. https://git.launchpad.net/~ubuntu- kernel/ubuntu/+source/linux/+git/disco/tree/drivers/net/wireless/intel/iwlwifi /iwl-drv.c#n1643 And the 5.1.5-050105-generic kernel which was tested and also has the problem is an unmodified upstream build. My system has nothing specified for the module parameter in /etc/modprobe.d, and I get Y from /sys/module/iwlwifi/parameters/d0i3_disable. @jnns, is it possible you've done something to your system to change the module parameter? Could have been by adding it in in /etc/modprobe.d or changing the kernel command line (cat /proc/cmdline). Not sure what else might be changing it. -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux-firmware in Ubuntu. https://bugs.launchpad.net/bugs/1830883 Title: iwlwifi Intel 8265 firmware crashing in powersave mode Status in linux-firmware package in Ubuntu: Incomplete Bug description: When I disconnect my AC adapter or run `sudo tlp bat` to switch to battery mode my wifi stops working. Reconnecting the AC adapter or running `sudo tlp ac` returns the wifi adapter to a functioning state. I use the default TLP configuration without modifications and at first I was thinking that this is a bug in TLP. The FAQs already have an entry about this and state that this is due to the "kernel driver does not implement power saving properly" [1]. This is why I'm reporting the issue here. I'm using Ubuntu Disco and I remember this working in previous Ubuntu versions / kernels. This happened on kernel 5.0.0-15-generic but also on the 5.1.5-050105-generic mainline kernel. Below is a snippet of /var/log/syslog at the moment of switching TLP to battery mode. Battery mode was activated at 11:25 and AC mode was re-activated around 11:27. Please let me know if this is actually the right place to submit this bug report and whether I can provide more information. --- May 29 11:23:40 x1cbn systemd-resolved[1037]: message repeated 3 times: [ Server returned error NXDOMAIN, mitigating potential DNS violation DVE-2018-0001, retrying transaction with reduced feature level UDP.] May 29 11:23:41 x1cbn colord[1285]: failed to get session [pid 1158]: Keine Daten verfügbar May 29 11:25:37 x1cbn wpa_supplicant[1144]: wlp2s0: CTRL-EVENT-SCAN-FAILED ret=-110 May 29 11:25:37 x1cbn geoclue[1741]: WiFi scan failed May 29 11:25:37 x1cbn kernel: [ 4645.773659] iwlwifi :02:00.0: Error sending SCAN_REQ_UMAC: time out after 2000ms. May 29 11:25:37 x1cbn kernel: [ 4645.773670] iwlwifi :02:00.0: Current CMD queue read_ptr 229 write_ptr 230 May 29 11:25:37 x1cbn kernel: [ 4645.775119] iwlwifi :02:00.0: Start IWL Error Log Dump: May 29 11:25:37 x1cbn kernel: [ 4645.775125] iwlwifi :02:00.0: Status: 0x0100, count: 6 May 29 11:25:37 x1cbn kernel: [ 4645.775130] iwlwifi :02:00.0: Loaded firmware version: 36.9f0a2d68.0 May 29 11:25:37 x1cbn kernel: [ 4645.775137] iwlwifi :02:00.0: 0x0084 | NMI_INTERRUPT_UNKNOWN May 29 11:25:37 x1cbn kernel: [ 4645.775142] iwlwifi :02:00.0: 0x0200 | trm_hw_status0 May 29 11:25:37 x1cbn kernel: [ 4645.775147] iwlwifi :02:00.0: 0x | trm_hw_status1 May 29 11:25:37 x1cbn kernel: [ 4645.775152] iwlwifi :02:00.0: 0x0002485C | branchlink2 May 29 11:25:37 x1cbn kernel: [ 4645.775157] iwlwifi :02:00.0: 0x0003A7CA | interruptlink1 May 29 11:25:37 x1cbn kernel: [ 4645.775161] iwlwifi :02:00.0: 0x5D56 | interruptlink2 May 29 11:25:37 x1cbn kernel: [ 4645.775166] iwlwifi :02:00.0: 0x | data1 May 29 11:25:37 x1cbn kernel: [ 4645.775171] iwlwifi :02:00.0: 0x0080 | data2 May 29 11:25:37 x1cbn kernel: [ 4645.775175] iwlwifi :02:00.0: 0x07A3 | data3 May 29 11:25:37 x1cbn kernel: [ 4645.775180] iwlwifi :02:00.0: 0xBBC109E2 | beacon time May 29 11:25:37 x1cbn kernel: [ 4645.775185] iwlwifi :02:00.0: 0x10C87621 | tsf low May 29 11:25:37 x1cbn kernel: [ 4645.775190] iwlwifi :02:00.0: 0x019F | tsf hi May 29 11:25:37 x1cbn kernel: [ 4645.775194] iwlwifi :02:00.0: 0x | time gp1 May 29 11:25:37 x1cbn kernel: [ 4645.775199] iwlwifi :02:00.0: 0xCC95B750 | time gp2 May 29 11:25:37 x1cbn kernel: [ 4645.775204] iwlwifi :02:00.0: 0x0001 | uCode
[Kernel-packages] [Bug 1830883] Re: iwlwifi Intel 8265 firmware crashing in powersave mode
Hi Seth, we debugged this and we found out that d0i3 was not disabled in iwlwifi. This is a kind of power saving thing that requires integration with the platform / kernel that should be enabled only for specific platform. Not something that should be enabled in a distribution kernel. https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/tree/drivers/net/wireless/intel/iwlwifi /iwl-drv.c?h=linux-5.1.y#n1670 In mainline, it is disabled by default. Not sure what happened here. Please look at https://bugzilla.kernel.org/show_bug.cgi?id=203787 ** Bug watch added: Linux Kernel Bug Tracker #203787 https://bugzilla.kernel.org/show_bug.cgi?id=203787 -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux-firmware in Ubuntu. https://bugs.launchpad.net/bugs/1830883 Title: iwlwifi Intel 8265 firmware crashing in powersave mode Status in linux-firmware package in Ubuntu: Incomplete Bug description: When I disconnect my AC adapter or run `sudo tlp bat` to switch to battery mode my wifi stops working. Reconnecting the AC adapter or running `sudo tlp ac` returns the wifi adapter to a functioning state. I use the default TLP configuration without modifications and at first I was thinking that this is a bug in TLP. The FAQs already have an entry about this and state that this is due to the "kernel driver does not implement power saving properly" [1]. This is why I'm reporting the issue here. I'm using Ubuntu Disco and I remember this working in previous Ubuntu versions / kernels. This happened on kernel 5.0.0-15-generic but also on the 5.1.5-050105-generic mainline kernel. Below is a snippet of /var/log/syslog at the moment of switching TLP to battery mode. Battery mode was activated at 11:25 and AC mode was re-activated around 11:27. Please let me know if this is actually the right place to submit this bug report and whether I can provide more information. --- May 29 11:23:40 x1cbn systemd-resolved[1037]: message repeated 3 times: [ Server returned error NXDOMAIN, mitigating potential DNS violation DVE-2018-0001, retrying transaction with reduced feature level UDP.] May 29 11:23:41 x1cbn colord[1285]: failed to get session [pid 1158]: Keine Daten verfügbar May 29 11:25:37 x1cbn wpa_supplicant[1144]: wlp2s0: CTRL-EVENT-SCAN-FAILED ret=-110 May 29 11:25:37 x1cbn geoclue[1741]: WiFi scan failed May 29 11:25:37 x1cbn kernel: [ 4645.773659] iwlwifi :02:00.0: Error sending SCAN_REQ_UMAC: time out after 2000ms. May 29 11:25:37 x1cbn kernel: [ 4645.773670] iwlwifi :02:00.0: Current CMD queue read_ptr 229 write_ptr 230 May 29 11:25:37 x1cbn kernel: [ 4645.775119] iwlwifi :02:00.0: Start IWL Error Log Dump: May 29 11:25:37 x1cbn kernel: [ 4645.775125] iwlwifi :02:00.0: Status: 0x0100, count: 6 May 29 11:25:37 x1cbn kernel: [ 4645.775130] iwlwifi :02:00.0: Loaded firmware version: 36.9f0a2d68.0 May 29 11:25:37 x1cbn kernel: [ 4645.775137] iwlwifi :02:00.0: 0x0084 | NMI_INTERRUPT_UNKNOWN May 29 11:25:37 x1cbn kernel: [ 4645.775142] iwlwifi :02:00.0: 0x0200 | trm_hw_status0 May 29 11:25:37 x1cbn kernel: [ 4645.775147] iwlwifi :02:00.0: 0x | trm_hw_status1 May 29 11:25:37 x1cbn kernel: [ 4645.775152] iwlwifi :02:00.0: 0x0002485C | branchlink2 May 29 11:25:37 x1cbn kernel: [ 4645.775157] iwlwifi :02:00.0: 0x0003A7CA | interruptlink1 May 29 11:25:37 x1cbn kernel: [ 4645.775161] iwlwifi :02:00.0: 0x5D56 | interruptlink2 May 29 11:25:37 x1cbn kernel: [ 4645.775166] iwlwifi :02:00.0: 0x | data1 May 29 11:25:37 x1cbn kernel: [ 4645.775171] iwlwifi :02:00.0: 0x0080 | data2 May 29 11:25:37 x1cbn kernel: [ 4645.775175] iwlwifi :02:00.0: 0x07A3 | data3 May 29 11:25:37 x1cbn kernel: [ 4645.775180] iwlwifi :02:00.0: 0xBBC109E2 | beacon time May 29 11:25:37 x1cbn kernel: [ 4645.775185] iwlwifi :02:00.0: 0x10C87621 | tsf low May 29 11:25:37 x1cbn kernel: [ 4645.775190] iwlwifi :02:00.0: 0x019F | tsf hi May 29 11:25:37 x1cbn kernel: [ 4645.775194] iwlwifi :02:00.0: 0x | time gp1 May 29 11:25:37 x1cbn kernel: [ 4645.775199] iwlwifi :02:00.0: 0xCC95B750 | time gp2 May 29 11:25:37 x1cbn kernel: [ 4645.775204] iwlwifi :02:00.0: 0x0001 | uCode revision type May 29 11:25:37 x1cbn kernel: [ 4645.775209] iwlwifi :02:00.0: 0x0024 | uCode version major May 29 11:25:37 x1cbn kernel: [ 4645.775214] iwlwifi :02:00.0: 0x9F0A2D68 | uCode version minor May 29 11:25:37 x1cbn kernel: [ 4645.775219] iwlwifi :02:00.0: 0x0230 | hw version May 29 11:25:37 x1cbn kernel: [ 4645.775224] iwlwifi :02:00.0: 0x0008 | board version May 29 11:25:37 x1cbn kernel: [ 4645.775228] iwlwifi :02:00.0: 0x001C | hcmd May 29 11:25:37 x1cbn kernel: [ 4645.775233] iwlwifi :02:00.0: 0x24022000 | isr0
[Kernel-packages] [Bug 1830883] Re: iwlwifi Intel 8265 firmware crashing in powersave mode
That does appear to be the latest firmware. There's some information about debugging and reporting bugs here: https://wireless.wiki.kernel.org/en/users/drivers/iwlwifi/debugging There are some things there to try, but given that this appears to be a firmware crash I don't know that they will be of much help. Your best bet is to follow the instructions there to report a bug for the developers at Intel to look at. -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux-firmware in Ubuntu. https://bugs.launchpad.net/bugs/1830883 Title: iwlwifi Intel 8265 firmware crashing in powersave mode Status in linux-firmware package in Ubuntu: Incomplete Bug description: When I disconnect my AC adapter or run `sudo tlp bat` to switch to battery mode my wifi stops working. Reconnecting the AC adapter or running `sudo tlp ac` returns the wifi adapter to a functioning state. I use the default TLP configuration without modifications and at first I was thinking that this is a bug in TLP. The FAQs already have an entry about this and state that this is due to the "kernel driver does not implement power saving properly" [1]. This is why I'm reporting the issue here. I'm using Ubuntu Disco and I remember this working in previous Ubuntu versions / kernels. This happened on kernel 5.0.0-15-generic but also on the 5.1.5-050105-generic mainline kernel. Below is a snippet of /var/log/syslog at the moment of switching TLP to battery mode. Battery mode was activated at 11:25 and AC mode was re-activated around 11:27. Please let me know if this is actually the right place to submit this bug report and whether I can provide more information. --- May 29 11:23:40 x1cbn systemd-resolved[1037]: message repeated 3 times: [ Server returned error NXDOMAIN, mitigating potential DNS violation DVE-2018-0001, retrying transaction with reduced feature level UDP.] May 29 11:23:41 x1cbn colord[1285]: failed to get session [pid 1158]: Keine Daten verfügbar May 29 11:25:37 x1cbn wpa_supplicant[1144]: wlp2s0: CTRL-EVENT-SCAN-FAILED ret=-110 May 29 11:25:37 x1cbn geoclue[1741]: WiFi scan failed May 29 11:25:37 x1cbn kernel: [ 4645.773659] iwlwifi :02:00.0: Error sending SCAN_REQ_UMAC: time out after 2000ms. May 29 11:25:37 x1cbn kernel: [ 4645.773670] iwlwifi :02:00.0: Current CMD queue read_ptr 229 write_ptr 230 May 29 11:25:37 x1cbn kernel: [ 4645.775119] iwlwifi :02:00.0: Start IWL Error Log Dump: May 29 11:25:37 x1cbn kernel: [ 4645.775125] iwlwifi :02:00.0: Status: 0x0100, count: 6 May 29 11:25:37 x1cbn kernel: [ 4645.775130] iwlwifi :02:00.0: Loaded firmware version: 36.9f0a2d68.0 May 29 11:25:37 x1cbn kernel: [ 4645.775137] iwlwifi :02:00.0: 0x0084 | NMI_INTERRUPT_UNKNOWN May 29 11:25:37 x1cbn kernel: [ 4645.775142] iwlwifi :02:00.0: 0x0200 | trm_hw_status0 May 29 11:25:37 x1cbn kernel: [ 4645.775147] iwlwifi :02:00.0: 0x | trm_hw_status1 May 29 11:25:37 x1cbn kernel: [ 4645.775152] iwlwifi :02:00.0: 0x0002485C | branchlink2 May 29 11:25:37 x1cbn kernel: [ 4645.775157] iwlwifi :02:00.0: 0x0003A7CA | interruptlink1 May 29 11:25:37 x1cbn kernel: [ 4645.775161] iwlwifi :02:00.0: 0x5D56 | interruptlink2 May 29 11:25:37 x1cbn kernel: [ 4645.775166] iwlwifi :02:00.0: 0x | data1 May 29 11:25:37 x1cbn kernel: [ 4645.775171] iwlwifi :02:00.0: 0x0080 | data2 May 29 11:25:37 x1cbn kernel: [ 4645.775175] iwlwifi :02:00.0: 0x07A3 | data3 May 29 11:25:37 x1cbn kernel: [ 4645.775180] iwlwifi :02:00.0: 0xBBC109E2 | beacon time May 29 11:25:37 x1cbn kernel: [ 4645.775185] iwlwifi :02:00.0: 0x10C87621 | tsf low May 29 11:25:37 x1cbn kernel: [ 4645.775190] iwlwifi :02:00.0: 0x019F | tsf hi May 29 11:25:37 x1cbn kernel: [ 4645.775194] iwlwifi :02:00.0: 0x | time gp1 May 29 11:25:37 x1cbn kernel: [ 4645.775199] iwlwifi :02:00.0: 0xCC95B750 | time gp2 May 29 11:25:37 x1cbn kernel: [ 4645.775204] iwlwifi :02:00.0: 0x0001 | uCode revision type May 29 11:25:37 x1cbn kernel: [ 4645.775209] iwlwifi :02:00.0: 0x0024 | uCode version major May 29 11:25:37 x1cbn kernel: [ 4645.775214] iwlwifi :02:00.0: 0x9F0A2D68 | uCode version minor May 29 11:25:37 x1cbn kernel: [ 4645.775219] iwlwifi :02:00.0: 0x0230 | hw version May 29 11:25:37 x1cbn kernel: [ 4645.775224] iwlwifi :02:00.0: 0x0008 | board version May 29 11:25:37 x1cbn kernel: [ 4645.775228] iwlwifi :02:00.0: 0x001C | hcmd May 29 11:25:37 x1cbn kernel: [ 4645.775233] iwlwifi :02:00.0: 0x24022000 | isr0 May 29 11:25:37 x1cbn kernel: [ 4645.775238] iwlwifi :02:00.0: 0x0180 | isr1 May 29 11:25:37 x1cbn kernel: [ 4645.775242] iwlwifi :02:00.0: 0x0800180A | isr2 May 29 11:25:37 x1cbn kernel: [ 4645.775247] iwlwifi :02:00.0:
[Kernel-packages] [Bug 1830883] Re: iwlwifi Intel 8265 firmware crashing in powersave mode
Thank you for helping out, Seth. `dmesg | grep firmware` shows me > [ 1360.174032] iwlwifi :02:00.0: Loaded firmware version: 36.9f0a2d68.0 so I assume that my /lib/firmware/iwlwifi-8265-36.ucode is being used. That's also the latest version in the linux-firmware git tree. Is there anything else I can check before publishing another bug report at kernel.org? -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux-firmware in Ubuntu. https://bugs.launchpad.net/bugs/1830883 Title: iwlwifi Intel 8265 firmware crashing in powersave mode Status in linux-firmware package in Ubuntu: Incomplete Bug description: When I disconnect my AC adapter or run `sudo tlp bat` to switch to battery mode my wifi stops working. Reconnecting the AC adapter or running `sudo tlp ac` returns the wifi adapter to a functioning state. I use the default TLP configuration without modifications and at first I was thinking that this is a bug in TLP. The FAQs already have an entry about this and state that this is due to the "kernel driver does not implement power saving properly" [1]. This is why I'm reporting the issue here. I'm using Ubuntu Disco and I remember this working in previous Ubuntu versions / kernels. This happened on kernel 5.0.0-15-generic but also on the 5.1.5-050105-generic mainline kernel. Below is a snippet of /var/log/syslog at the moment of switching TLP to battery mode. Battery mode was activated at 11:25 and AC mode was re-activated around 11:27. Please let me know if this is actually the right place to submit this bug report and whether I can provide more information. --- May 29 11:23:40 x1cbn systemd-resolved[1037]: message repeated 3 times: [ Server returned error NXDOMAIN, mitigating potential DNS violation DVE-2018-0001, retrying transaction with reduced feature level UDP.] May 29 11:23:41 x1cbn colord[1285]: failed to get session [pid 1158]: Keine Daten verfügbar May 29 11:25:37 x1cbn wpa_supplicant[1144]: wlp2s0: CTRL-EVENT-SCAN-FAILED ret=-110 May 29 11:25:37 x1cbn geoclue[1741]: WiFi scan failed May 29 11:25:37 x1cbn kernel: [ 4645.773659] iwlwifi :02:00.0: Error sending SCAN_REQ_UMAC: time out after 2000ms. May 29 11:25:37 x1cbn kernel: [ 4645.773670] iwlwifi :02:00.0: Current CMD queue read_ptr 229 write_ptr 230 May 29 11:25:37 x1cbn kernel: [ 4645.775119] iwlwifi :02:00.0: Start IWL Error Log Dump: May 29 11:25:37 x1cbn kernel: [ 4645.775125] iwlwifi :02:00.0: Status: 0x0100, count: 6 May 29 11:25:37 x1cbn kernel: [ 4645.775130] iwlwifi :02:00.0: Loaded firmware version: 36.9f0a2d68.0 May 29 11:25:37 x1cbn kernel: [ 4645.775137] iwlwifi :02:00.0: 0x0084 | NMI_INTERRUPT_UNKNOWN May 29 11:25:37 x1cbn kernel: [ 4645.775142] iwlwifi :02:00.0: 0x0200 | trm_hw_status0 May 29 11:25:37 x1cbn kernel: [ 4645.775147] iwlwifi :02:00.0: 0x | trm_hw_status1 May 29 11:25:37 x1cbn kernel: [ 4645.775152] iwlwifi :02:00.0: 0x0002485C | branchlink2 May 29 11:25:37 x1cbn kernel: [ 4645.775157] iwlwifi :02:00.0: 0x0003A7CA | interruptlink1 May 29 11:25:37 x1cbn kernel: [ 4645.775161] iwlwifi :02:00.0: 0x5D56 | interruptlink2 May 29 11:25:37 x1cbn kernel: [ 4645.775166] iwlwifi :02:00.0: 0x | data1 May 29 11:25:37 x1cbn kernel: [ 4645.775171] iwlwifi :02:00.0: 0x0080 | data2 May 29 11:25:37 x1cbn kernel: [ 4645.775175] iwlwifi :02:00.0: 0x07A3 | data3 May 29 11:25:37 x1cbn kernel: [ 4645.775180] iwlwifi :02:00.0: 0xBBC109E2 | beacon time May 29 11:25:37 x1cbn kernel: [ 4645.775185] iwlwifi :02:00.0: 0x10C87621 | tsf low May 29 11:25:37 x1cbn kernel: [ 4645.775190] iwlwifi :02:00.0: 0x019F | tsf hi May 29 11:25:37 x1cbn kernel: [ 4645.775194] iwlwifi :02:00.0: 0x | time gp1 May 29 11:25:37 x1cbn kernel: [ 4645.775199] iwlwifi :02:00.0: 0xCC95B750 | time gp2 May 29 11:25:37 x1cbn kernel: [ 4645.775204] iwlwifi :02:00.0: 0x0001 | uCode revision type May 29 11:25:37 x1cbn kernel: [ 4645.775209] iwlwifi :02:00.0: 0x0024 | uCode version major May 29 11:25:37 x1cbn kernel: [ 4645.775214] iwlwifi :02:00.0: 0x9F0A2D68 | uCode version minor May 29 11:25:37 x1cbn kernel: [ 4645.775219] iwlwifi :02:00.0: 0x0230 | hw version May 29 11:25:37 x1cbn kernel: [ 4645.775224] iwlwifi :02:00.0: 0x0008 | board version May 29 11:25:37 x1cbn kernel: [ 4645.775228] iwlwifi :02:00.0: 0x001C | hcmd May 29 11:25:37 x1cbn kernel: [ 4645.775233] iwlwifi :02:00.0: 0x24022000 | isr0 May 29 11:25:37 x1cbn kernel: [ 4645.775238] iwlwifi :02:00.0: 0x0180 | isr1 May 29 11:25:37 x1cbn kernel: [ 4645.775242] iwlwifi :02:00.0: 0x0800180A | isr2 May 29 11:25:37 x1cbn kernel: [ 4645.775247] iwlwifi :02:00.0: 0x00417CC0 | isr3 May 29 11:25:37 x1cbn kernel: [
[Kernel-packages] [Bug 1830883] Re: iwlwifi Intel 8265 firmware crashing in powersave mode
apport information ** Tags added: apport-collected disco wayland-session ** Description changed: When I disconnect my AC adapter or run `sudo tlp bat` to switch to battery mode my wifi stops working. Reconnecting the AC adapter or running `sudo tlp ac` returns the wifi adapter to a functioning state. I use the default TLP configuration without modifications and at first I was thinking that this is a bug in TLP. The FAQs already have an entry about this and state that this is due to the "kernel driver does not implement power saving properly" [1]. This is why I'm reporting the issue here. I'm using Ubuntu Disco and I remember this working in previous Ubuntu versions / kernels. This happened on kernel 5.0.0-15-generic but also on the 5.1.5-050105-generic mainline kernel. Below is a snippet of /var/log/syslog at the moment of switching TLP to battery mode. Battery mode was activated at 11:25 and AC mode was re- activated around 11:27. Please let me know if this is actually the right place to submit this bug report and whether I can provide more information. --- May 29 11:23:40 x1cbn systemd-resolved[1037]: message repeated 3 times: [ Server returned error NXDOMAIN, mitigating potential DNS violation DVE-2018-0001, retrying transaction with reduced feature level UDP.] May 29 11:23:41 x1cbn colord[1285]: failed to get session [pid 1158]: Keine Daten verfügbar May 29 11:25:37 x1cbn wpa_supplicant[1144]: wlp2s0: CTRL-EVENT-SCAN-FAILED ret=-110 May 29 11:25:37 x1cbn geoclue[1741]: WiFi scan failed May 29 11:25:37 x1cbn kernel: [ 4645.773659] iwlwifi :02:00.0: Error sending SCAN_REQ_UMAC: time out after 2000ms. May 29 11:25:37 x1cbn kernel: [ 4645.773670] iwlwifi :02:00.0: Current CMD queue read_ptr 229 write_ptr 230 May 29 11:25:37 x1cbn kernel: [ 4645.775119] iwlwifi :02:00.0: Start IWL Error Log Dump: May 29 11:25:37 x1cbn kernel: [ 4645.775125] iwlwifi :02:00.0: Status: 0x0100, count: 6 May 29 11:25:37 x1cbn kernel: [ 4645.775130] iwlwifi :02:00.0: Loaded firmware version: 36.9f0a2d68.0 May 29 11:25:37 x1cbn kernel: [ 4645.775137] iwlwifi :02:00.0: 0x0084 | NMI_INTERRUPT_UNKNOWN May 29 11:25:37 x1cbn kernel: [ 4645.775142] iwlwifi :02:00.0: 0x0200 | trm_hw_status0 May 29 11:25:37 x1cbn kernel: [ 4645.775147] iwlwifi :02:00.0: 0x | trm_hw_status1 May 29 11:25:37 x1cbn kernel: [ 4645.775152] iwlwifi :02:00.0: 0x0002485C | branchlink2 May 29 11:25:37 x1cbn kernel: [ 4645.775157] iwlwifi :02:00.0: 0x0003A7CA | interruptlink1 May 29 11:25:37 x1cbn kernel: [ 4645.775161] iwlwifi :02:00.0: 0x5D56 | interruptlink2 May 29 11:25:37 x1cbn kernel: [ 4645.775166] iwlwifi :02:00.0: 0x | data1 May 29 11:25:37 x1cbn kernel: [ 4645.775171] iwlwifi :02:00.0: 0x0080 | data2 May 29 11:25:37 x1cbn kernel: [ 4645.775175] iwlwifi :02:00.0: 0x07A3 | data3 May 29 11:25:37 x1cbn kernel: [ 4645.775180] iwlwifi :02:00.0: 0xBBC109E2 | beacon time May 29 11:25:37 x1cbn kernel: [ 4645.775185] iwlwifi :02:00.0: 0x10C87621 | tsf low May 29 11:25:37 x1cbn kernel: [ 4645.775190] iwlwifi :02:00.0: 0x019F | tsf hi May 29 11:25:37 x1cbn kernel: [ 4645.775194] iwlwifi :02:00.0: 0x | time gp1 May 29 11:25:37 x1cbn kernel: [ 4645.775199] iwlwifi :02:00.0: 0xCC95B750 | time gp2 May 29 11:25:37 x1cbn kernel: [ 4645.775204] iwlwifi :02:00.0: 0x0001 | uCode revision type May 29 11:25:37 x1cbn kernel: [ 4645.775209] iwlwifi :02:00.0: 0x0024 | uCode version major May 29 11:25:37 x1cbn kernel: [ 4645.775214] iwlwifi :02:00.0: 0x9F0A2D68 | uCode version minor May 29 11:25:37 x1cbn kernel: [ 4645.775219] iwlwifi :02:00.0: 0x0230 | hw version May 29 11:25:37 x1cbn kernel: [ 4645.775224] iwlwifi :02:00.0: 0x0008 | board version May 29 11:25:37 x1cbn kernel: [ 4645.775228] iwlwifi :02:00.0: 0x001C | hcmd May 29 11:25:37 x1cbn kernel: [ 4645.775233] iwlwifi :02:00.0: 0x24022000 | isr0 May 29 11:25:37 x1cbn kernel: [ 4645.775238] iwlwifi :02:00.0: 0x0180 | isr1 May 29 11:25:37 x1cbn kernel: [ 4645.775242] iwlwifi :02:00.0: 0x0800180A | isr2 May 29 11:25:37 x1cbn kernel: [ 4645.775247] iwlwifi :02:00.0: 0x00417CC0 | isr3 May 29 11:25:37 x1cbn kernel: [ 4645.775252] iwlwifi :02:00.0: 0x | isr4 May 29 11:25:37 x1cbn kernel: [ 4645.775257] iwlwifi :02:00.0: 0x0AD9001C | last cmd Id May 29 11:25:37 x1cbn kernel: [ 4645.775262] iwlwifi :02:00.0: 0x | wait_event May 29 11:25:37 x1cbn kernel: [ 4645.775267] iwlwifi :02:00.0: 0x4288 | l2p_control May 29 11:25:37 x1cbn kernel: [ 4645.775271] iwlwifi :02:00.0: 0x00018034 | l2p_duration May 29 11:25:37 x1cbn kernel: [ 4645.775276] iwlwifi :02:00.0: 0x03BF | l2p_mhvalid May 29 11:25:37 x1cbn kernel: [ 4645.775281]
[Kernel-packages] [Bug 1830883] Re: iwlwifi Intel 8265 firmware crashing in powersave mode
Can you please run 'apport-collect 1830883' in a terminal to attach relevant logs and system information to this bug? It's likely you'll need to get support from Intel for this issue since it is a firmware crash, but one thing you should check is that you have the newest firmware available for your hardware. I can point you at the specific file once you've attached your system information, but if you know which file you need you can find it here: https://git.kernel.org/pub/scm/linux/kernel/git/firmware/linux- firmware.git/tree/ If you still have this problem with the newest firmware available, you should report the bug here: https://bugzilla.kernel.org Product: Networking Component: Wireless ** Changed in: linux-firmware (Ubuntu) Status: New => Incomplete -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux-firmware in Ubuntu. https://bugs.launchpad.net/bugs/1830883 Title: iwlwifi Intel 8265 firmware crashing in powersave mode Status in linux-firmware package in Ubuntu: Incomplete Bug description: When I disconnect my AC adapter or run `sudo tlp bat` to switch to battery mode my wifi stops working. Reconnecting the AC adapter or running `sudo tlp ac` returns the wifi adapter to a functioning state. I use the default TLP configuration without modifications and at first I was thinking that this is a bug in TLP. The FAQs already have an entry about this and state that this is due to the "kernel driver does not implement power saving properly" [1]. This is why I'm reporting the issue here. I'm using Ubuntu Disco and I remember this working in previous Ubuntu versions / kernels. This happened on kernel 5.0.0-15-generic but also on the 5.1.5-050105-generic mainline kernel. Below is a snippet of /var/log/syslog at the moment of switching TLP to battery mode. Battery mode was activated at 11:25 and AC mode was re-activated around 11:27. Please let me know if this is actually the right place to submit this bug report and whether I can provide more information. --- May 29 11:23:40 x1cbn systemd-resolved[1037]: message repeated 3 times: [ Server returned error NXDOMAIN, mitigating potential DNS violation DVE-2018-0001, retrying transaction with reduced feature level UDP.] May 29 11:23:41 x1cbn colord[1285]: failed to get session [pid 1158]: Keine Daten verfügbar May 29 11:25:37 x1cbn wpa_supplicant[1144]: wlp2s0: CTRL-EVENT-SCAN-FAILED ret=-110 May 29 11:25:37 x1cbn geoclue[1741]: WiFi scan failed May 29 11:25:37 x1cbn kernel: [ 4645.773659] iwlwifi :02:00.0: Error sending SCAN_REQ_UMAC: time out after 2000ms. May 29 11:25:37 x1cbn kernel: [ 4645.773670] iwlwifi :02:00.0: Current CMD queue read_ptr 229 write_ptr 230 May 29 11:25:37 x1cbn kernel: [ 4645.775119] iwlwifi :02:00.0: Start IWL Error Log Dump: May 29 11:25:37 x1cbn kernel: [ 4645.775125] iwlwifi :02:00.0: Status: 0x0100, count: 6 May 29 11:25:37 x1cbn kernel: [ 4645.775130] iwlwifi :02:00.0: Loaded firmware version: 36.9f0a2d68.0 May 29 11:25:37 x1cbn kernel: [ 4645.775137] iwlwifi :02:00.0: 0x0084 | NMI_INTERRUPT_UNKNOWN May 29 11:25:37 x1cbn kernel: [ 4645.775142] iwlwifi :02:00.0: 0x0200 | trm_hw_status0 May 29 11:25:37 x1cbn kernel: [ 4645.775147] iwlwifi :02:00.0: 0x | trm_hw_status1 May 29 11:25:37 x1cbn kernel: [ 4645.775152] iwlwifi :02:00.0: 0x0002485C | branchlink2 May 29 11:25:37 x1cbn kernel: [ 4645.775157] iwlwifi :02:00.0: 0x0003A7CA | interruptlink1 May 29 11:25:37 x1cbn kernel: [ 4645.775161] iwlwifi :02:00.0: 0x5D56 | interruptlink2 May 29 11:25:37 x1cbn kernel: [ 4645.775166] iwlwifi :02:00.0: 0x | data1 May 29 11:25:37 x1cbn kernel: [ 4645.775171] iwlwifi :02:00.0: 0x0080 | data2 May 29 11:25:37 x1cbn kernel: [ 4645.775175] iwlwifi :02:00.0: 0x07A3 | data3 May 29 11:25:37 x1cbn kernel: [ 4645.775180] iwlwifi :02:00.0: 0xBBC109E2 | beacon time May 29 11:25:37 x1cbn kernel: [ 4645.775185] iwlwifi :02:00.0: 0x10C87621 | tsf low May 29 11:25:37 x1cbn kernel: [ 4645.775190] iwlwifi :02:00.0: 0x019F | tsf hi May 29 11:25:37 x1cbn kernel: [ 4645.775194] iwlwifi :02:00.0: 0x | time gp1 May 29 11:25:37 x1cbn kernel: [ 4645.775199] iwlwifi :02:00.0: 0xCC95B750 | time gp2 May 29 11:25:37 x1cbn kernel: [ 4645.775204] iwlwifi :02:00.0: 0x0001 | uCode revision type May 29 11:25:37 x1cbn kernel: [ 4645.775209] iwlwifi :02:00.0: 0x0024 | uCode version major May 29 11:25:37 x1cbn kernel: [ 4645.775214] iwlwifi :02:00.0: 0x9F0A2D68 | uCode version minor May 29 11:25:37 x1cbn kernel: [ 4645.775219] iwlwifi :02:00.0: 0x0230 | hw version May 29 11:25:37 x1cbn kernel: [ 4645.775224] iwlwifi :02:00.0: 0x0008 | board version May 29 11:25:37 x1cbn kernel: [ 4645.775228] iwlwifi :02:00.0:
