OK. I followed the above instructions and eventually managed to install the recommended firmware and kernel. Upon rebooting there were several console errors:
[ 1.096562] Couldn't get size: 0x800000000000000e [ 1.700597] psmouse serio1: elantech: elantech_send_cmd query 0x02 failed. [ 1.700620] psmouse serio1: elantech: failed to query capabilities. Eventually the system booted. The USB mouse didn't work but the laptop's touch pad still functioned. Wireless network support appeared to be fine. I did not experience the problems that triggered this bug report. Output of "modinfo ath10k_core" before the upgrade: filename: /lib/modules/4.15.0-50-generic/kernel/drivers/net/wireless/ath/ath10k/ath10k_core.ko license: Dual BSD/GPL description: Core module for Qualcomm Atheros 802.11ac wireless LAN cards. author: Qualcomm Atheros srcversion: 165FDC1E16C9659545F5EBF depends: mac80211,cfg80211,ath retpoline: Y intree: Y name: ath10k_core vermagic: 4.15.0-50-generic SMP mod_unload signat: PKCS#7 signer: sig_key: sig_hashalgo: md4 parm: debug_mask:Debugging mask (uint) parm: uart_print:Uart target debugging (bool) parm: skip_otp:Skip otp failure for calibration in testmode (bool) parm: cryptmode:Crypto mode: 0-hardware, 1-software (uint) parm: rawmode:Use raw 802.11 frame datapath (bool) Output of 'modinfo ath10k_core" after the upgrade: filename: /lib/modules/5.2.0-050200rc2-generic/kernel/drivers/net/wireless/ath/ath10k/ath10k_core.ko license: Dual BSD/GPL description: Core module for Qualcomm Atheros 802.11ac wireless LAN cards. author: Qualcomm Atheros srcversion: 8629BA1FF61C3F4A154EFE0 depends: mac80211,cfg80211,ath retpoline: Y intree: Y name: ath10k_core vermagic: 5.2.0-050200rc2-generic SMP mod_unload signat: PKCS#7 signer: sig_key: sig_hashalgo: md4 parm: debug_mask:Debugging mask (uint) parm: uart_print:Uart target debugging (bool) parm: skip_otp:Skip otp failure for calibration in testmode (bool) parm: cryptmode:Crypto mode: 0-hardware, 1-software (uint) parm: rawmode:Use raw 802.11 frame datapath (bool) parm: coredump_mask:Bitfield of what to include in firmware crash file (ulong) Output of 'modinfo ath10k_pci" before: filename: /lib/modules/4.15.0-50-generic/kernel/drivers/net/wireless/ath/ath10k/ath10k_pci.ko firmware: ath10k/QCA9377/hw1.0/board.bin firmware: ath10k/QCA9377/hw1.0/firmware-5.bin firmware: ath10k/QCA6174/hw3.0/board-2.bin firmware: ath10k/QCA6174/hw3.0/board.bin firmware: ath10k/QCA6174/hw3.0/firmware-6.bin firmware: ath10k/QCA6174/hw3.0/firmware-5.bin firmware: ath10k/QCA6174/hw3.0/firmware-4.bin firmware: ath10k/QCA6174/hw2.1/board-2.bin firmware: ath10k/QCA6174/hw2.1/board.bin firmware: ath10k/QCA6174/hw2.1/firmware-5.bin firmware: ath10k/QCA6174/hw2.1/firmware-4.bin firmware: ath10k/QCA9887/hw1.0/board-2.bin firmware: ath10k/QCA9887/hw1.0/board.bin firmware: ath10k/QCA9887/hw1.0/firmware-5.bin firmware: ath10k/QCA988X/hw2.0/board-2.bin firmware: ath10k/QCA988X/hw2.0/board.bin firmware: ath10k/QCA988X/hw2.0/firmware-5.bin firmware: ath10k/QCA988X/hw2.0/firmware-4.bin firmware: ath10k/QCA988X/hw2.0/firmware-3.bin firmware: ath10k/QCA988X/hw2.0/firmware-2.bin license: Dual BSD/GPL description: Driver support for Qualcomm Atheros 802.11ac WLAN PCIe/AHB devices author: Qualcomm Atheros srcversion: 63EC35DB9BF9FC4074A002D alias: pci:v0000168Cd00000050sv*sd*bc*sc*i* alias: pci:v0000168Cd00000042sv*sd*bc*sc*i* alias: pci:v0000168Cd00000046sv*sd*bc*sc*i* alias: pci:v0000168Cd00000056sv*sd*bc*sc*i* alias: pci:v0000168Cd00000040sv*sd*bc*sc*i* alias: pci:v0000168Cd0000003Esv*sd*bc*sc*i* alias: pci:v0000168Cd00000041sv*sd*bc*sc*i* alias: pci:v0000168Cd0000003Csv*sd*bc*sc*i* depends: ath10k_core retpoline: Y intree: Y name: ath10k_pci vermagic: 4.15.0-50-generic SMP mod_unload signat: PKCS#7 signer: Output of "modinfo ath10k_pci" after: filename: /lib/modules/5.2.0-050200rc2-generic/kernel/drivers/net/wireless/ath/ath10k/ath10k_pci.ko firmware: ath10k/QCA9377/hw1.0/board.bin firmware: ath10k/QCA9377/hw1.0/firmware-5.bin firmware: ath10k/QCA9377/hw1.0/firmware-6.bin firmware: ath10k/QCA6174/hw3.0/board-2.bin firmware: ath10k/QCA6174/hw3.0/board.bin firmware: ath10k/QCA6174/hw3.0/firmware-6.bin firmware: ath10k/QCA6174/hw3.0/firmware-5.bin firmware: ath10k/QCA6174/hw3.0/firmware-4.bin firmware: ath10k/QCA6174/hw2.1/board-2.bin firmware: ath10k/QCA6174/hw2.1/board.bin firmware: ath10k/QCA6174/hw2.1/firmware-5.bin firmware: ath10k/QCA6174/hw2.1/firmware-4.bin firmware: ath10k/QCA9887/hw1.0/board-2.bin firmware: ath10k/QCA9887/hw1.0/board.bin firmware: ath10k/QCA9887/hw1.0/firmware-5.bin firmware: ath10k/QCA988X/hw2.0/board-2.bin firmware: ath10k/QCA988X/hw2.0/board.bin firmware: ath10k/QCA988X/hw2.0/firmware-5.bin firmware: ath10k/QCA988X/hw2.0/firmware-4.bin firmware: ath10k/QCA988X/hw2.0/firmware-3.bin firmware: ath10k/QCA988X/hw2.0/firmware-2.bin license: Dual BSD/GPL description: Driver support for Qualcomm Atheros 802.11ac WLAN PCIe/AHB devices author: Qualcomm Atheros srcversion: 5CC3E1846D3C5D0B99778E8 alias: pci:v0000168Cd00000050sv*sd*bc*sc*i* alias: pci:v0000168Cd00000042sv*sd*bc*sc*i* alias: pci:v0000168Cd00000046sv*sd*bc*sc*i* alias: pci:v0000168Cd00000056sv*sd*bc*sc*i* alias: pci:v0000168Cd00000040sv*sd*bc*sc*i* alias: pci:v0000168Cd0000003Esv*sd*bc*sc*i* alias: pci:v0000168Cd00000041sv*sd*bc*sc*i* alias: pci:v0000168Cd0000003Csv*sd*bc*sc*i* alias: pci:v00000777d000011ACsv*sd*bc*sc*i* depends: ath10k_core retpoline: Y intree: Y name: ath10k_pci vermagic: 5.2.0-050200rc2-generic SMP mod_unload signat: PKCS#7 signer: sig_key: sig_hashalgo: md4 parm: irq_mode:0: auto, 1: legacy, 2: msi (default: 0) (uint) parm: reset_mode:0: auto, 1: warm only (default: 0) (uint) Output of 'uname -a' before: inux dellfvw 4.15.0-50-generic #54-Ubuntu SMP Mon May 6 18:46:08 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux and after: Linux dellfvw 5.2.0-050200rc2-generic #201905262130 SMP Mon May 27 01:33:02 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux Output of 'dmesg' and the relevant portion of /var/log/syslog attached. I then reverted to my previous configuration to resolve errors at boot time and restore USB mouse support. (As I mentioned this is my main production machine and I need it to make a living with so it has to work properly.) Current output of 'uname -a': Linux dellfvw 4.15.0-50-generic #54-Ubuntu SMP Mon May 6 18:46:08 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux Current output of "dpkg -l | grep linux-firmware" ii linux-firmware 1.173 all Firmware for Linux kernel drivers So I am now back to running the same versions as before I attempted the latest kernel and firmware drivers. HOWEVER... The issue is now back, with the 1.1.7.3 firmware!! >From the syslog: Jun 5 17:20:59 dellfvw kernel: [ 849.573785] pcieport 0000:00:1c.5: AER: Corrected error received: id=00e5 Jun 5 17:20:59 dellfvw kernel: [ 849.573794] pcieport 0000:00:1c.5: PCIe Bus Error: severity=Corrected, type=Data Link Layer, id=00e5(Transmitter ID) Jun 5 17:20:59 dellfvw kernel: [ 849.573802] pcieport 0000:00:1c.5: device [8086:9d15] error status/mask=00001000/00002000 Jun 5 17:20:59 dellfvw kernel: [ 849.573807] pcieport 0000:00:1c.5: [12] Replay Timer Timeout Jun 5 17:22:09 dellfvw kernel: [ 919.092051] pcieport 0000:00:1c.5: AER: Corrected error received: id=00e5 Jun 5 17:22:09 dellfvw kernel: [ 919.092068] pcieport 0000:00:1c.5: PCIe Bus Error: severity=Corrected, type=Data Link Layer, id=00e5(Transmitter ID) Jun 5 17:22:09 dellfvw kernel: [ 919.092082] pcieport 0000:00:1c.5: device [8086:9d15] error status/mask=00001000/00002000 Jun 5 17:22:09 dellfvw kernel: [ 919.092093] pcieport 0000:00:1c.5: [12] Replay Timer Timeout Jun 5 17:22:09 dellfvw systemd[1]: Starting Cleanup of Temporary Directories... Jun 5 17:22:09 dellfvw systemd[1]: Started Cleanup of Temporary Directories. Jun 5 17:22:32 dellfvw wpa_supplicant[1083]: wlp3s0: CTRL-EVENT-SCAN-FAILED ret=-110 Jun 5 17:22:32 dellfvw kernel: [ 942.728371] ath10k_pci 0000:03:00.0: failed to receive scan abortion completion: timed out Jun 5 17:22:32 dellfvw kernel: [ 942.728374] ath10k_pci 0000:03:00.0: failed to stop scan: -110 Jun 5 17:22:32 dellfvw kernel: [ 942.728376] ath10k_pci 0000:03:00.0: failed to start hw scan: -110 Jun 5 17:25:43 dellfvw kernel: [ 1133.299821] pcieport 0000:00:1c.5: AER: Corrected error received: id=00e5 Jun 5 17:25:43 dellfvw kernel: [ 1133.299835] pcieport 0000:00:1c.5: PCIe Bus Error: severity=Corrected, type=Data Link Layer, id=00e5(Transmitter ID) Jun 5 17:25:43 dellfvw kernel: [ 1133.299846] pcieport 0000:00:1c.5: device [8086:9d15] error status/mask=00001000/00002000 Jun 5 17:25:43 dellfvw kernel: [ 1133.299854] pcieport 0000:00:1c.5: [12] Replay Timer Timeout Jun 5 17:27:19 dellfvw kernel: [ 1229.057676] pcieport 0000:00:1c.5: AER: Corrected error received: id=00e5 Jun 5 17:27:19 dellfvw kernel: [ 1229.057693] pcieport 0000:00:1c.5: PCIe Bus Error: severity=Corrected, type=Data Link Layer, id=00e5(Transmitter ID) Jun 5 17:27:19 dellfvw kernel: [ 1229.057708] pcieport 0000:00:1c.5: device [8086:9d15] error status/mask=00001000/00002000 Jun 5 17:27:19 dellfvw kernel: [ 1229.057717] pcieport 0000:00:1c.5: [12] Replay Timer Timeout Jun 5 17:27:32 dellfvw wpa_supplicant[1083]: wlp3s0: CTRL-EVENT-SCAN-FAILED ret=-110 Jun 5 17:27:32 dellfvw kernel: [ 1242.756171] ath10k_pci 0000:03:00.0: failed to receive scan abortion completion: timed out Jun 5 17:27:32 dellfvw kernel: [ 1242.756180] ath10k_pci 0000:03:00.0: failed to stop scan: -110 Jun 5 17:27:32 dellfvw kernel: [ 1242.756184] ath10k_pci 0000:03:00.0: failed to start hw scan: -110 Jun 5 17:32:32 dellfvw kernel: [ 1542.765615] ath10k_pci 0000:03:00.0: failed to receive scan abortion completion: timed out Jun 5 17:32:32 dellfvw kernel: [ 1542.765623] ath10k_pci 0000:03:00.0: failed to stop scan: -110 Jun 5 17:32:32 dellfvw kernel: [ 1542.765627] ath10k_pci 0000:03:00.0: failed to start hw scan: -110 Jun 5 17:32:32 dellfvw wpa_supplicant[1083]: wlp3s0: CTRL-EVENT-SCAN-FAILED ret=-110 So while the 5.2.0 kernel with the latest firmware drivers seemed to have resolved the issue (but introduces a lot of problems related to a manual install of same) I now have the problem with the same versions that previously worked OK. I'm not sure where to go from here. I came close to wrecking the PC with which I make a living and I'm not comfortable with the risk of hosing it in an attempt to try out different development builds. Reverting to the previous configuration took quite a bit of effort and I'm now worse off then before this experiment. Suggestions on how to proceed are welcome!! -- 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/1830350 Title: System freezes repeatedly for several seconds; wifi driver related errors Status in linux package in Ubuntu: Confirmed Status in linux-firmware package in Ubuntu: New Bug description: I updated my system about a month ago (Fri 26 April 2019). This was the first update in several weeks and installed fresh versions of a whole truck load of applications including a kernel update. Since this latest bunch of updates the system freezes for a few seconds at regular intervals. Not fatal, but very annoying. Output from "journalctl -f" shows the following errors occurring at the same time as these freezes: May 24 10:31:18 dellfvw wpa_supplicant[1078]: wlp3s0: CTRL-EVENT-SCAN-FAILED ret=-110 May 24 10:31:18 dellfvw kernel: ath10k_pci 0000:03:00.0: failed to receive scan abortion completion: timed out May 24 10:31:18 dellfvw kernel: ath10k_pci 0000:03:00.0: failed to stop scan: -110 May 24 10:31:18 dellfvw kernel: ath10k_pci 0000:03:00.0: failed to start hw scan: -110 Corresponding lines in /var/log/syslog: May 24 10:29:16 dellfvw avahi-daemon[1053]: Registering new address record for fe80::424:c75b:2a2d:52e2 on wlp3s0.*. May 24 10:29:55 dellfvw avahi-daemon[1053]: Withdrawing address record for fe80::424:c75b:2a2d:52e2 on wlp3s0. May 24 10:31:18 dellfvw wpa_supplicant[1078]: wlp3s0: CTRL-EVENT-SCAN-FAILED ret=-110 May 24 10:31:18 dellfvw kernel: [45569.661175] ath10k_pci 0000:03:00.0: failed to receive scan abortion completion: timed out May 24 10:31:18 dellfvw kernel: [45569.661183] ath10k_pci 0000:03:00.0: failed to stop scan: -110 May 24 10:31:18 dellfvw kernel: [45569.661187] ath10k_pci 0000:03:00.0: failed to start hw scan: -110 I do note the interval between the avahi-daemon entry and the subsequent errors related to the wireless network interface, but the former precede the latter consistently in syslog, suggesting they may be related, which is why I'm including it in this report. The freezes last a few seconds. Keyboard input is preserved at this time and typed input appears after the freeze is resolved. Mouse cursor continues to move during freezes but mouse clicks are only processed after the freeze is resolved, i.e. the result of the mouse click is suspended (e.g. buffered) until the system becomes responsive again. For example, clicking on a window during the freeze will focus that window after the freeze has been resolved. The system is a Dell Inspiron 15 3576. Relevant output of lspci -nnk: 03:00.0 Network controller [0280]: Qualcomm Atheros QCA9377 802.11ac Wireless Network Adapter [168c:0042] (rev 31) Output of lsb_release -rd: Description: Ubuntu 18.04.2 LTS Release: 18.04 Output of uname -a: Linux dellfvw 4.15.0-50-generic #54-Ubuntu SMP Mon May 6 18:46:08 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux As already said, this is a new issue that has began occurring only after the recent batch of updates that included a kernel update. I reported the bug (maybe in the wrong place) but so far I have received no response. I've lived with this for a month or so hoping that further updates would fix the problem but it still persists. Installing the latest firmware update (14 Mar 2019) has no effect. No other changes were made to either hardware or OS configuration. Logfile snippets attached. --- ProblemType: Bug ApportVersion: 2.20.9-0ubuntu7.6 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: frankvw 1989 F.... pulseaudio CurrentDesktop: GNOME DistroRelease: Ubuntu 18.04 EcryptfsInUse: Yes HibernationDevice: RESUME=UUID=7d4169aa-136e-4eac-bb87-bb1b63b0bb27 InstallationDate: Installed on 2018-05-10 (379 days ago) InstallationMedia: Ubuntu 18.04 LTS "Bionic Beaver" - Release amd64 (20180426) MachineType: Dell Inc. Inspiron 3576 Package: linux (not installed) ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.15.0-50-generic root=UUID=0ce4cd7e-e0fd-4fe0-83fc-9f845405ab62 ro quiet splash vt.handoff=1 ProcVersionSignature: Ubuntu 4.15.0-50.54-generic 4.15.18 RelatedPackageVersions: linux-restricted-modules-4.15.0-50-generic N/A linux-backports-modules-4.15.0-50-generic N/A linux-firmware 1.173.6 Tags: bionic Uname: Linux 4.15.0-50-generic x86_64 UpgradeStatus: No upgrade log present (probably fresh install) UserGroups: adm cdrom dip disk lpadmin plugdev sambashare sudo users vboxusers _MarkForUpload: True dmi.bios.date: 01/16/2019 dmi.bios.vendor: Dell Inc. dmi.bios.version: 1.7.0 dmi.board.name: 0K83NX dmi.board.vendor: Dell Inc. dmi.board.version: A00 dmi.chassis.type: 10 dmi.chassis.vendor: Dell Inc. dmi.modalias: dmi:bvnDellInc.:bvr1.7.0:bd01/16/2019:svnDellInc.:pnInspiron3576:pvr:rvnDellInc.:rn0K83NX:rvrA00:cvnDellInc.:ct10:cvr: dmi.product.family: Inspiron dmi.product.name: Inspiron 3576 dmi.sys.vendor: Dell Inc. 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