[Touch-packages] [Bug 1886714] Re: Bluetooth disconnects, and then sound fails on reconnect
As soon as I can get an [Asus USB BT500](https://www.asus.com/Networking /USB-BT500/) I will try that, as I suspect this issue is somehow related to the chip in the dongle. It seems like all dongles with the same chip has the same issue. The sound problem is probably (?) a secondary effect, but that is the most prominent effect. -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to bluez in Ubuntu. https://bugs.launchpad.net/bugs/1886714 Title: Bluetooth disconnects, and then sound fails on reconnect Status in bluez package in Ubuntu: New Bug description: This bug has persisted over several years, and several versions, and after a lot of investigation I'm not really any closer on what's going on. I have two pretty old GA MA78gm S2H mainboards, configured slightly different, and otherwise working properly. Both of them have run both Ubuntu and Windows. The problem seems to have been minimized when running Win10, and even if it is there it seems like Win10 recover when it happen. I wonder if I started noticing the problem under Ubuntu 14.x, but I'm pretty sure it was there already at Ubuntu 16.x. I'm now running Ubuntu 19.10 and Gnome 3.34.2. (Just for the record, the bug also persisted in Ubu 18.04 for as long as I was using it.) It isn't really an option to switch the mainboards, as there are too much custom-builds running on them for the moment. They will probably be replaced when I have time to rebuild everything. ;) To make Bluetooth work I use an ASUS USB-BT400, which report as “BCM920702 Bluetooth 4.0”, or more accurately “BCM20702A1 (001.002.014) build 1467”. I have also used other dongles, but it seems like all of them has the same chipset. Now… Given I restart the computer And boot into Ubuntu 19.10 And log in as myself And attach a pair of Sony MDR-ZX770BN When I listen to sound from a movie with A2DP Then at some random point it start to lag noticeably (sound becomes scratchy) And suddenly disconnects (at this point it seems like it is Bluetooth that disconnects) It may take 5–10 minutes and up to several hours before it disconnects. Given I turn the headphones off And back on When it reconnects to the computer Then the computer fails to enable the sound device (visible in the preference manager f.ex.) There are several reports of various equipments that disconnect, and I wonder if this could be the same problem. Problem 1 The dongle is rather hot when it disconnects. This is mere speculation, but I wonder if the disconnect happen because either the mainboard gives to little current and thus it fails due to voltage drop, or it fails due to overheating. It seems like the port should have enough current to sustain the dongle, but I wonder if the mainboard could let several ports share the same power source, and thus it fail to deliver enough current. There are other devices powered by the USB ports, and they don't seem to fail, which seems likely to happen if power is the issue. The issue seems to be somewhat related to the quality of the audio, which makes me wonder whether higher quality gives more transferred data, which again gives higher power consumption. It also seems like the issue can be triggered by moving away from the computer. That would give higher tx power, which could make the dongle overheat or mainboard could fail to provide enough current. Is there any way to get a more specific failure report from the dongle? Problem 2 After the headphone reconnects it seems like the sound system isn't working properly. I've been checking, and everything seems correct, still the headphone is missing as an output device. I have not been able to figure out what makes the sound system fail, and I have not been able to make it recover. Only way to recover seems to be to do a cold reboot. A simple warm reboot does not fix the problem, but this can be related to problem 1. A few dumps john@hydra:~$ dmesg | fgrep 'Blue' [3.089584] usb 1-2.2: Product: BCM920702 Bluetooth 4.0 [8.417252] Bluetooth: Core ver 2.22 [8.417280] Bluetooth: HCI device and connection manager initialized [8.417284] Bluetooth: HCI socket layer initialized [8.417286] Bluetooth: L2CAP socket layer initialized [8.417301] Bluetooth: SCO socket layer initialized [8.779706] Bluetooth: hci0: BCM: chip id 63 [8.780703] Bluetooth: hci0: BCM: features 0x07 [8.796682] Bluetooth: hci0: hydra [8.800667] Bluetooth: hci0: BCM20702A1 (001.002.014) build 1467 [9.671568] Bluetooth: hci0: BCM20702A1 (001.002.014) build 1467 [9.687584] Bluetooth: hci0: Broadcom Bluetooth Device [ 10.571440] Bluetooth: BNEP (Ethernet Emulation) ver 1.3 [ 10.571442] Bluetooth: BNEP filters: protocol multicast [ 10.571448] Bluetooth: BNEP socket layer initialized [
[Touch-packages] [Bug 1886714] Re: Bluetooth disconnects, and then sound fails on reconnect
Thanks. Please also try to describe the problem (and only one problem) in a couple of sentences or less and put that at the top of the bug. ** Changed in: bluez (Ubuntu) Status: Incomplete => New -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to bluez in Ubuntu. https://bugs.launchpad.net/bugs/1886714 Title: Bluetooth disconnects, and then sound fails on reconnect Status in bluez package in Ubuntu: New Bug description: This bug has persisted over several years, and several versions, and after a lot of investigation I'm not really any closer on what's going on. I have two pretty old GA MA78gm S2H mainboards, configured slightly different, and otherwise working properly. Both of them have run both Ubuntu and Windows. The problem seems to have been minimized when running Win10, and even if it is there it seems like Win10 recover when it happen. I wonder if I started noticing the problem under Ubuntu 14.x, but I'm pretty sure it was there already at Ubuntu 16.x. I'm now running Ubuntu 19.10 and Gnome 3.34.2. (Just for the record, the bug also persisted in Ubu 18.04 for as long as I was using it.) It isn't really an option to switch the mainboards, as there are too much custom-builds running on them for the moment. They will probably be replaced when I have time to rebuild everything. ;) To make Bluetooth work I use an ASUS USB-BT400, which report as “BCM920702 Bluetooth 4.0”, or more accurately “BCM20702A1 (001.002.014) build 1467”. I have also used other dongles, but it seems like all of them has the same chipset. Now… Given I restart the computer And boot into Ubuntu 19.10 And log in as myself And attach a pair of Sony MDR-ZX770BN When I listen to sound from a movie with A2DP Then at some random point it start to lag noticeably (sound becomes scratchy) And suddenly disconnects (at this point it seems like it is Bluetooth that disconnects) It may take 5–10 minutes and up to several hours before it disconnects. Given I turn the headphones off And back on When it reconnects to the computer Then the computer fails to enable the sound device (visible in the preference manager f.ex.) There are several reports of various equipments that disconnect, and I wonder if this could be the same problem. Problem 1 The dongle is rather hot when it disconnects. This is mere speculation, but I wonder if the disconnect happen because either the mainboard gives to little current and thus it fails due to voltage drop, or it fails due to overheating. It seems like the port should have enough current to sustain the dongle, but I wonder if the mainboard could let several ports share the same power source, and thus it fail to deliver enough current. There are other devices powered by the USB ports, and they don't seem to fail, which seems likely to happen if power is the issue. The issue seems to be somewhat related to the quality of the audio, which makes me wonder whether higher quality gives more transferred data, which again gives higher power consumption. It also seems like the issue can be triggered by moving away from the computer. That would give higher tx power, which could make the dongle overheat or mainboard could fail to provide enough current. Is there any way to get a more specific failure report from the dongle? Problem 2 After the headphone reconnects it seems like the sound system isn't working properly. I've been checking, and everything seems correct, still the headphone is missing as an output device. I have not been able to figure out what makes the sound system fail, and I have not been able to make it recover. Only way to recover seems to be to do a cold reboot. A simple warm reboot does not fix the problem, but this can be related to problem 1. A few dumps john@hydra:~$ dmesg | fgrep 'Blue' [3.089584] usb 1-2.2: Product: BCM920702 Bluetooth 4.0 [8.417252] Bluetooth: Core ver 2.22 [8.417280] Bluetooth: HCI device and connection manager initialized [8.417284] Bluetooth: HCI socket layer initialized [8.417286] Bluetooth: L2CAP socket layer initialized [8.417301] Bluetooth: SCO socket layer initialized [8.779706] Bluetooth: hci0: BCM: chip id 63 [8.780703] Bluetooth: hci0: BCM: features 0x07 [8.796682] Bluetooth: hci0: hydra [8.800667] Bluetooth: hci0: BCM20702A1 (001.002.014) build 1467 [9.671568] Bluetooth: hci0: BCM20702A1 (001.002.014) build 1467 [9.687584] Bluetooth: hci0: Broadcom Bluetooth Device [ 10.571440] Bluetooth: BNEP (Ethernet Emulation) ver 1.3 [ 10.571442] Bluetooth: BNEP filters: protocol multicast [ 10.571448] Bluetooth: BNEP socket layer initialized [ 630.835385] Bluetooth: RFCOMM TTY layer initialized [ 630.835393] Bluetooth: RFCOMM socket layer initialized [ 630.835398]
[Touch-packages] [Bug 1886714] Re: Bluetooth disconnects, and then sound fails on reconnect
Slightly different machine, running 20.04 LTS, but not too different I guess. Uses the same BT-400 dongle as the other machine, the Hama dongle seems to create additional problems even if it should use the same chip. Also tried Fedora 32 from a live USB stick, it had the same problem. I wonder if it somehow is triggered by sampling rate, number of bits, encoding, or something similar as it wasn't triggered while I saw “The Old Guard” but when I started “Nighfliers” it emerged pretty fast. It seems to start with an increasing delay (lack of sync) until it fails. When it did fail before the apport report the sound in my Bluetooth headphones stopped, but it was still connected in the Bluetooth pane in “preference”. I turned the headphones off, but they were still listed as connected. Turned them back on, still connected. Tried to manually set the output device, no change. Then ran apport-collect. -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to bluez in Ubuntu. https://bugs.launchpad.net/bugs/1886714 Title: Bluetooth disconnects, and then sound fails on reconnect Status in bluez package in Ubuntu: Incomplete Bug description: This bug has persisted over several years, and several versions, and after a lot of investigation I'm not really any closer on what's going on. I have two pretty old GA MA78gm S2H mainboards, configured slightly different, and otherwise working properly. Both of them have run both Ubuntu and Windows. The problem seems to have been minimized when running Win10, and even if it is there it seems like Win10 recover when it happen. I wonder if I started noticing the problem under Ubuntu 14.x, but I'm pretty sure it was there already at Ubuntu 16.x. I'm now running Ubuntu 19.10 and Gnome 3.34.2. (Just for the record, the bug also persisted in Ubu 18.04 for as long as I was using it.) It isn't really an option to switch the mainboards, as there are too much custom-builds running on them for the moment. They will probably be replaced when I have time to rebuild everything. ;) To make Bluetooth work I use an ASUS USB-BT400, which report as “BCM920702 Bluetooth 4.0”, or more accurately “BCM20702A1 (001.002.014) build 1467”. I have also used other dongles, but it seems like all of them has the same chipset. Now… Given I restart the computer And boot into Ubuntu 19.10 And log in as myself And attach a pair of Sony MDR-ZX770BN When I listen to sound from a movie with A2DP Then at some random point it start to lag noticeably (sound becomes scratchy) And suddenly disconnects (at this point it seems like it is Bluetooth that disconnects) It may take 5–10 minutes and up to several hours before it disconnects. Given I turn the headphones off And back on When it reconnects to the computer Then the computer fails to enable the sound device (visible in the preference manager f.ex.) There are several reports of various equipments that disconnect, and I wonder if this could be the same problem. Problem 1 The dongle is rather hot when it disconnects. This is mere speculation, but I wonder if the disconnect happen because either the mainboard gives to little current and thus it fails due to voltage drop, or it fails due to overheating. It seems like the port should have enough current to sustain the dongle, but I wonder if the mainboard could let several ports share the same power source, and thus it fail to deliver enough current. There are other devices powered by the USB ports, and they don't seem to fail, which seems likely to happen if power is the issue. The issue seems to be somewhat related to the quality of the audio, which makes me wonder whether higher quality gives more transferred data, which again gives higher power consumption. It also seems like the issue can be triggered by moving away from the computer. That would give higher tx power, which could make the dongle overheat or mainboard could fail to provide enough current. Is there any way to get a more specific failure report from the dongle? Problem 2 After the headphone reconnects it seems like the sound system isn't working properly. I've been checking, and everything seems correct, still the headphone is missing as an output device. I have not been able to figure out what makes the sound system fail, and I have not been able to make it recover. Only way to recover seems to be to do a cold reboot. A simple warm reboot does not fix the problem, but this can be related to problem 1. A few dumps john@hydra:~$ dmesg | fgrep 'Blue' [3.089584] usb 1-2.2: Product: BCM920702 Bluetooth 4.0 [8.417252] Bluetooth: Core ver 2.22 [8.417280] Bluetooth: HCI device and connection manager initialized [8.417284] Bluetooth: HCI socket layer initialized [8.417286] Bluetooth: L2CAP socket layer initialized [
[Touch-packages] [Bug 1886714] Re: Bluetooth disconnects, and then sound fails on reconnect
apport information ** Tags added: apport-collected focal ** Description changed: This bug has persisted over several years, and several versions, and after a lot of investigation I'm not really any closer on what's going on. I have two pretty old GA MA78gm S2H mainboards, configured slightly different, and otherwise working properly. Both of them have run both Ubuntu and Windows. The problem seems to have been minimized when running Win10, and even if it is there it seems like Win10 recover when it happen. I wonder if I started noticing the problem under Ubuntu 14.x, but I'm pretty sure it was there already at Ubuntu 16.x. I'm now running Ubuntu 19.10 and Gnome 3.34.2. (Just for the record, the bug also persisted in Ubu 18.04 for as long as I was using it.) It isn't really an option to switch the mainboards, as there are too much custom-builds running on them for the moment. They will probably be replaced when I have time to rebuild everything. ;) To make Bluetooth work I use an ASUS USB-BT400, which report as “BCM920702 Bluetooth 4.0”, or more accurately “BCM20702A1 (001.002.014) build 1467”. I have also used other dongles, but it seems like all of them has the same chipset. Now… Given I restart the computer And boot into Ubuntu 19.10 And log in as myself And attach a pair of Sony MDR-ZX770BN When I listen to sound from a movie with A2DP Then at some random point it start to lag noticeably (sound becomes scratchy) And suddenly disconnects (at this point it seems like it is Bluetooth that disconnects) It may take 5–10 minutes and up to several hours before it disconnects. Given I turn the headphones off And back on When it reconnects to the computer Then the computer fails to enable the sound device (visible in the preference manager f.ex.) There are several reports of various equipments that disconnect, and I wonder if this could be the same problem. Problem 1 The dongle is rather hot when it disconnects. This is mere speculation, but I wonder if the disconnect happen because either the mainboard gives to little current and thus it fails due to voltage drop, or it fails due to overheating. It seems like the port should have enough current to sustain the dongle, but I wonder if the mainboard could let several ports share the same power source, and thus it fail to deliver enough current. There are other devices powered by the USB ports, and they don't seem to fail, which seems likely to happen if power is the issue. The issue seems to be somewhat related to the quality of the audio, which makes me wonder whether higher quality gives more transferred data, which again gives higher power consumption. It also seems like the issue can be triggered by moving away from the computer. That would give higher tx power, which could make the dongle overheat or mainboard could fail to provide enough current. Is there any way to get a more specific failure report from the dongle? Problem 2 After the headphone reconnects it seems like the sound system isn't working properly. I've been checking, and everything seems correct, still the headphone is missing as an output device. I have not been able to figure out what makes the sound system fail, and I have not been able to make it recover. Only way to recover seems to be to do a cold reboot. A simple warm reboot does not fix the problem, but this can be related to problem 1. A few dumps john@hydra:~$ dmesg | fgrep 'Blue' [3.089584] usb 1-2.2: Product: BCM920702 Bluetooth 4.0 [8.417252] Bluetooth: Core ver 2.22 [8.417280] Bluetooth: HCI device and connection manager initialized [8.417284] Bluetooth: HCI socket layer initialized [8.417286] Bluetooth: L2CAP socket layer initialized [8.417301] Bluetooth: SCO socket layer initialized [8.779706] Bluetooth: hci0: BCM: chip id 63 [8.780703] Bluetooth: hci0: BCM: features 0x07 [8.796682] Bluetooth: hci0: hydra [8.800667] Bluetooth: hci0: BCM20702A1 (001.002.014) build 1467 [9.671568] Bluetooth: hci0: BCM20702A1 (001.002.014) build 1467 [9.687584] Bluetooth: hci0: Broadcom Bluetooth Device [ 10.571440] Bluetooth: BNEP (Ethernet Emulation) ver 1.3 [ 10.571442] Bluetooth: BNEP filters: protocol multicast [ 10.571448] Bluetooth: BNEP socket layer initialized [ 630.835385] Bluetooth: RFCOMM TTY layer initialized [ 630.835393] Bluetooth: RFCOMM socket layer initialized [ 630.835398] Bluetooth: RFCOMM ver 1.11 john@hydra:~$ dmesg | fgrep 'sound' [7.920552] input: HDA ATI SB Rear Mic as /devices/pci:00/:00:14.2/sound/card0/input27 [7.920612] input: HDA ATI SB Front Mic as /devices/pci:00/:00:14.2/sound/card0/input28 [7.920657] input: HDA ATI SB Line as /devices/pci:00/:00:14.2/sound/card0/input29 [7.920704] input: HDA ATI SB
[Touch-packages] [Bug 1886714] Re: Bluetooth disconnects, and then sound fails on reconnect
Thanks. Yes I noticed that but we still need info from a machine running a supported version of Ubuntu. So on either 18.04 or 20.04 please run this command to collect it automatically: apport-collect 1886714 ** Changed in: bluez (Ubuntu) Status: Won't Fix => Incomplete -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to bluez in Ubuntu. https://bugs.launchpad.net/bugs/1886714 Title: Bluetooth disconnects, and then sound fails on reconnect Status in bluez package in Ubuntu: Incomplete Bug description: This bug has persisted over several years, and several versions, and after a lot of investigation I'm not really any closer on what's going on. I have two pretty old GA MA78gm S2H mainboards, configured slightly different, and otherwise working properly. Both of them have run both Ubuntu and Windows. The problem seems to have been minimized when running Win10, and even if it is there it seems like Win10 recover when it happen. I wonder if I started noticing the problem under Ubuntu 14.x, but I'm pretty sure it was there already at Ubuntu 16.x. I'm now running Ubuntu 19.10 and Gnome 3.34.2. (Just for the record, the bug also persisted in Ubu 18.04 for as long as I was using it.) It isn't really an option to switch the mainboards, as there are too much custom-builds running on them for the moment. They will probably be replaced when I have time to rebuild everything. ;) To make Bluetooth work I use an ASUS USB-BT400, which report as “BCM920702 Bluetooth 4.0”, or more accurately “BCM20702A1 (001.002.014) build 1467”. I have also used other dongles, but it seems like all of them has the same chipset. Now… Given I restart the computer And boot into Ubuntu 19.10 And log in as myself And attach a pair of Sony MDR-ZX770BN When I listen to sound from a movie with A2DP Then at some random point it start to lag noticeably (sound becomes scratchy) And suddenly disconnects (at this point it seems like it is Bluetooth that disconnects) It may take 5–10 minutes and up to several hours before it disconnects. Given I turn the headphones off And back on When it reconnects to the computer Then the computer fails to enable the sound device (visible in the preference manager f.ex.) There are several reports of various equipments that disconnect, and I wonder if this could be the same problem. Problem 1 The dongle is rather hot when it disconnects. This is mere speculation, but I wonder if the disconnect happen because either the mainboard gives to little current and thus it fails due to voltage drop, or it fails due to overheating. It seems like the port should have enough current to sustain the dongle, but I wonder if the mainboard could let several ports share the same power source, and thus it fail to deliver enough current. There are other devices powered by the USB ports, and they don't seem to fail, which seems likely to happen if power is the issue. The issue seems to be somewhat related to the quality of the audio, which makes me wonder whether higher quality gives more transferred data, which again gives higher power consumption. It also seems like the issue can be triggered by moving away from the computer. That would give higher tx power, which could make the dongle overheat or mainboard could fail to provide enough current. Is there any way to get a more specific failure report from the dongle? Problem 2 After the headphone reconnects it seems like the sound system isn't working properly. I've been checking, and everything seems correct, still the headphone is missing as an output device. I have not been able to figure out what makes the sound system fail, and I have not been able to make it recover. Only way to recover seems to be to do a cold reboot. A simple warm reboot does not fix the problem, but this can be related to problem 1. A few dumps john@hydra:~$ dmesg | fgrep 'Blue' [3.089584] usb 1-2.2: Product: BCM920702 Bluetooth 4.0 [8.417252] Bluetooth: Core ver 2.22 [8.417280] Bluetooth: HCI device and connection manager initialized [8.417284] Bluetooth: HCI socket layer initialized [8.417286] Bluetooth: L2CAP socket layer initialized [8.417301] Bluetooth: SCO socket layer initialized [8.779706] Bluetooth: hci0: BCM: chip id 63 [8.780703] Bluetooth: hci0: BCM: features 0x07 [8.796682] Bluetooth: hci0: hydra [8.800667] Bluetooth: hci0: BCM20702A1 (001.002.014) build 1467 [9.671568] Bluetooth: hci0: BCM20702A1 (001.002.014) build 1467 [9.687584] Bluetooth: hci0: Broadcom Bluetooth Device [ 10.571440] Bluetooth: BNEP (Ethernet Emulation) ver 1.3 [ 10.571442] Bluetooth: BNEP filters: protocol multicast [ 10.571448] Bluetooth: BNEP socket layer initialized [ 630.835385] Bluetooth: RFCOMM TTY layer
[Touch-packages] [Bug 1886714] Re: Bluetooth disconnects, and then sound fails on reconnect
>From second paragraph “I wonder if I started noticing the problem under Ubuntu 14.x, but I'm pretty sure it was there already at Ubuntu 16.x. I'm now running Ubuntu 19.10 and Gnome 3.34.2. (Just for the record, the bug also persisted in Ubu 18.04 for as long as I was using it.)” The bug was infact the reason I updated to 19.04 and later to 19.10, but it did not go away. -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to bluez in Ubuntu. https://bugs.launchpad.net/bugs/1886714 Title: Bluetooth disconnects, and then sound fails on reconnect Status in bluez package in Ubuntu: Won't Fix Bug description: This bug has persisted over several years, and several versions, and after a lot of investigation I'm not really any closer on what's going on. I have two pretty old GA MA78gm S2H mainboards, configured slightly different, and otherwise working properly. Both of them have run both Ubuntu and Windows. The problem seems to have been minimized when running Win10, and even if it is there it seems like Win10 recover when it happen. I wonder if I started noticing the problem under Ubuntu 14.x, but I'm pretty sure it was there already at Ubuntu 16.x. I'm now running Ubuntu 19.10 and Gnome 3.34.2. (Just for the record, the bug also persisted in Ubu 18.04 for as long as I was using it.) It isn't really an option to switch the mainboards, as there are too much custom-builds running on them for the moment. They will probably be replaced when I have time to rebuild everything. ;) To make Bluetooth work I use an ASUS USB-BT400, which report as “BCM920702 Bluetooth 4.0”, or more accurately “BCM20702A1 (001.002.014) build 1467”. I have also used other dongles, but it seems like all of them has the same chipset. Now… Given I restart the computer And boot into Ubuntu 19.10 And log in as myself And attach a pair of Sony MDR-ZX770BN When I listen to sound from a movie with A2DP Then at some random point it start to lag noticeably (sound becomes scratchy) And suddenly disconnects (at this point it seems like it is Bluetooth that disconnects) It may take 5–10 minutes and up to several hours before it disconnects. Given I turn the headphones off And back on When it reconnects to the computer Then the computer fails to enable the sound device (visible in the preference manager f.ex.) There are several reports of various equipments that disconnect, and I wonder if this could be the same problem. Problem 1 The dongle is rather hot when it disconnects. This is mere speculation, but I wonder if the disconnect happen because either the mainboard gives to little current and thus it fails due to voltage drop, or it fails due to overheating. It seems like the port should have enough current to sustain the dongle, but I wonder if the mainboard could let several ports share the same power source, and thus it fail to deliver enough current. There are other devices powered by the USB ports, and they don't seem to fail, which seems likely to happen if power is the issue. The issue seems to be somewhat related to the quality of the audio, which makes me wonder whether higher quality gives more transferred data, which again gives higher power consumption. It also seems like the issue can be triggered by moving away from the computer. That would give higher tx power, which could make the dongle overheat or mainboard could fail to provide enough current. Is there any way to get a more specific failure report from the dongle? Problem 2 After the headphone reconnects it seems like the sound system isn't working properly. I've been checking, and everything seems correct, still the headphone is missing as an output device. I have not been able to figure out what makes the sound system fail, and I have not been able to make it recover. Only way to recover seems to be to do a cold reboot. A simple warm reboot does not fix the problem, but this can be related to problem 1. A few dumps john@hydra:~$ dmesg | fgrep 'Blue' [3.089584] usb 1-2.2: Product: BCM920702 Bluetooth 4.0 [8.417252] Bluetooth: Core ver 2.22 [8.417280] Bluetooth: HCI device and connection manager initialized [8.417284] Bluetooth: HCI socket layer initialized [8.417286] Bluetooth: L2CAP socket layer initialized [8.417301] Bluetooth: SCO socket layer initialized [8.779706] Bluetooth: hci0: BCM: chip id 63 [8.780703] Bluetooth: hci0: BCM: features 0x07 [8.796682] Bluetooth: hci0: hydra [8.800667] Bluetooth: hci0: BCM20702A1 (001.002.014) build 1467 [9.671568] Bluetooth: hci0: BCM20702A1 (001.002.014) build 1467 [9.687584] Bluetooth: hci0: Broadcom Bluetooth Device [ 10.571440] Bluetooth: BNEP (Ethernet Emulation) ver 1.3 [ 10.571442] Bluetooth: BNEP filters: protocol multicast [ 10.571448]
[Touch-packages] [Bug 1886714] Re: Bluetooth disconnects, and then sound fails on reconnect
Ubuntu 19.10 is reaching end-of-life within days from now: https://wiki.ubuntu.com/Releases Please reproduce the bug on either 18.04 or 20.04 and then report a new bug from that machine by running: ubuntu-bug bluez ** Changed in: bluez (Ubuntu) Status: New => Won't Fix -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to bluez in Ubuntu. https://bugs.launchpad.net/bugs/1886714 Title: Bluetooth disconnects, and then sound fails on reconnect Status in bluez package in Ubuntu: Won't Fix Bug description: This bug has persisted over several years, and several versions, and after a lot of investigation I'm not really any closer on what's going on. I have two pretty old GA MA78gm S2H mainboards, configured slightly different, and otherwise working properly. Both of them have run both Ubuntu and Windows. The problem seems to have been minimized when running Win10, and even if it is there it seems like Win10 recover when it happen. I wonder if I started noticing the problem under Ubuntu 14.x, but I'm pretty sure it was there already at Ubuntu 16.x. I'm now running Ubuntu 19.10 and Gnome 3.34.2. (Just for the record, the bug also persisted in Ubu 18.04 for as long as I was using it.) It isn't really an option to switch the mainboards, as there are too much custom-builds running on them for the moment. They will probably be replaced when I have time to rebuild everything. ;) To make Bluetooth work I use an ASUS USB-BT400, which report as “BCM920702 Bluetooth 4.0”, or more accurately “BCM20702A1 (001.002.014) build 1467”. I have also used other dongles, but it seems like all of them has the same chipset. Now… Given I restart the computer And boot into Ubuntu 19.10 And log in as myself And attach a pair of Sony MDR-ZX770BN When I listen to sound from a movie with A2DP Then at some random point it start to lag noticeably (sound becomes scratchy) And suddenly disconnects (at this point it seems like it is Bluetooth that disconnects) It may take 5–10 minutes and up to several hours before it disconnects. Given I turn the headphones off And back on When it reconnects to the computer Then the computer fails to enable the sound device (visible in the preference manager f.ex.) There are several reports of various equipments that disconnect, and I wonder if this could be the same problem. Problem 1 The dongle is rather hot when it disconnects. This is mere speculation, but I wonder if the disconnect happen because either the mainboard gives to little current and thus it fails due to voltage drop, or it fails due to overheating. It seems like the port should have enough current to sustain the dongle, but I wonder if the mainboard could let several ports share the same power source, and thus it fail to deliver enough current. There are other devices powered by the USB ports, and they don't seem to fail, which seems likely to happen if power is the issue. The issue seems to be somewhat related to the quality of the audio, which makes me wonder whether higher quality gives more transferred data, which again gives higher power consumption. It also seems like the issue can be triggered by moving away from the computer. That would give higher tx power, which could make the dongle overheat or mainboard could fail to provide enough current. Is there any way to get a more specific failure report from the dongle? Problem 2 After the headphone reconnects it seems like the sound system isn't working properly. I've been checking, and everything seems correct, still the headphone is missing as an output device. I have not been able to figure out what makes the sound system fail, and I have not been able to make it recover. Only way to recover seems to be to do a cold reboot. A simple warm reboot does not fix the problem, but this can be related to problem 1. A few dumps john@hydra:~$ dmesg | fgrep 'Blue' [3.089584] usb 1-2.2: Product: BCM920702 Bluetooth 4.0 [8.417252] Bluetooth: Core ver 2.22 [8.417280] Bluetooth: HCI device and connection manager initialized [8.417284] Bluetooth: HCI socket layer initialized [8.417286] Bluetooth: L2CAP socket layer initialized [8.417301] Bluetooth: SCO socket layer initialized [8.779706] Bluetooth: hci0: BCM: chip id 63 [8.780703] Bluetooth: hci0: BCM: features 0x07 [8.796682] Bluetooth: hci0: hydra [8.800667] Bluetooth: hci0: BCM20702A1 (001.002.014) build 1467 [9.671568] Bluetooth: hci0: BCM20702A1 (001.002.014) build 1467 [9.687584] Bluetooth: hci0: Broadcom Bluetooth Device [ 10.571440] Bluetooth: BNEP (Ethernet Emulation) ver 1.3 [ 10.571442] Bluetooth: BNEP filters: protocol multicast [ 10.571448] Bluetooth: BNEP socket layer initialized [ 630.835385] Bluetooth: RFCOMM TTY layer
[Touch-packages] [Bug 1886714] Re: Bluetooth disconnects, and then sound fails on reconnect
** Description changed: This bug has persisted over several years, and several versions, and after a lot of investigation I'm not really any closer on what's going on. I have two pretty old GA MA78gm S2H mainboards, configured slightly different, and otherwise working properly. Both of them have run both Ubuntu and Windows. The problem seems to have been minimized when running Win10, and even if it is there it seems like Win10 recover when it happen. I wonder if I started noticing the problem under Ubuntu 14.x, but I'm pretty sure it was there already at Ubuntu 16.x. I'm now running - Ubuntu 19.10 and Gnome 3.34.2. + Ubuntu 19.10 and Gnome 3.34.2. (Just for the record, the bug also + persisted in Ubu 18.04 for as long as I was using it.) It isn't really an option to switch the mainboards, as there are too much custom-builds running on them for the moment. They will probably be replaced when I have time to rebuild everything. ;) To make Bluetooth work I use an ASUS USB-BT400, which report as “BCM920702 Bluetooth 4.0”, or more accurately “BCM20702A1 (001.002.014) build 1467”. I have also used other dongles, but it seems like all of them has the same chipset. Now… Given I restart the computer And boot into Ubuntu 19.10 And log in as myself And attach a pair of Sony MDR-ZX770BN When I listen to sound from a movie with A2DP Then at some random point it start to lag noticeably (sound becomes scratchy) And suddenly disconnects (at this point it seems like it is Bluetooth that disconnects) It may take 5–10 minutes and up to several hours before it disconnects. Given I turn the headphones off And back on When it reconnects to the computer Then the computer fails to enable the sound device (visible in the preference manager f.ex.) There are several reports of various equipments that disconnect, and I wonder if this could be the same problem. Problem 1 The dongle is rather hot when it disconnects. This is mere speculation, but I wonder if the disconnect happen because either the mainboard gives to little current and thus it fails due to voltage drop, or it fails due to overheating. It seems like the port should have enough current to sustain the dongle, but I wonder if the mainboard could let several ports share the same power source, and thus it fail to deliver enough current. There are other devices powered by the USB ports, and they don't seem to fail, which seems likely to happen if power is the issue. The issue seems to be somewhat related to the quality of the audio, which makes me wonder whether higher quality gives more transferred data, which again gives higher power consumption. It also seems like the issue can be triggered by moving away from the computer. That would give higher tx power, which could make the dongle overheat or mainboard could fail to provide enough current. Is there any way to get a more specific failure report from the dongle? Problem 2 After the headphone reconnects it seems like the sound system isn't working properly. I've been checking, and everything seems correct, still the headphone is missing as an output device. I have not been able to figure out what makes the sound system fail, and I have not been able to make it recover. Only way to recover seems to be to do a cold reboot. A simple warm reboot does not fix the problem, but this can be related to problem 1. A few dumps john@hydra:~$ dmesg | fgrep 'Blue' [3.089584] usb 1-2.2: Product: BCM920702 Bluetooth 4.0 [8.417252] Bluetooth: Core ver 2.22 [8.417280] Bluetooth: HCI device and connection manager initialized [8.417284] Bluetooth: HCI socket layer initialized [8.417286] Bluetooth: L2CAP socket layer initialized [8.417301] Bluetooth: SCO socket layer initialized [8.779706] Bluetooth: hci0: BCM: chip id 63 [8.780703] Bluetooth: hci0: BCM: features 0x07 [8.796682] Bluetooth: hci0: hydra [8.800667] Bluetooth: hci0: BCM20702A1 (001.002.014) build 1467 [9.671568] Bluetooth: hci0: BCM20702A1 (001.002.014) build 1467 [9.687584] Bluetooth: hci0: Broadcom Bluetooth Device [ 10.571440] Bluetooth: BNEP (Ethernet Emulation) ver 1.3 [ 10.571442] Bluetooth: BNEP filters: protocol multicast [ 10.571448] Bluetooth: BNEP socket layer initialized [ 630.835385] Bluetooth: RFCOMM TTY layer initialized [ 630.835393] Bluetooth: RFCOMM socket layer initialized [ 630.835398] Bluetooth: RFCOMM ver 1.11 - john@hydra:~$ dmesg | fgrep 'sound' [7.920552] input: HDA ATI SB Rear Mic as /devices/pci:00/:00:14.2/sound/card0/input27 [7.920612] input: HDA ATI SB Front Mic as /devices/pci:00/:00:14.2/sound/card0/input28 [7.920657] input: HDA ATI SB Line as /devices/pci:00/:00:14.2/sound/card0/input29 [7.920704] input: HDA ATI SB Line Out Front as
[Touch-packages] [Bug 1886714] Re: Bluetooth disconnects, and then sound fails on reconnect
After the crash (hid hangs, could be a side effect) this is the dmesg.0 file still existing john@hydra:~$ tail -100 /var/log/dmesg.0 [7.277226] kernel: nvidia-uvm: Loaded the UVM driver, major device number 237. [7.498321] kernel: cfg80211: Loading compiled-in X.509 certificates for regulatory database [7.521638] kernel: cfg80211: Loaded X.509 cert 'sforshee: 00b28ddf47aef9cea7' [7.785905] kernel: snd_hda_intel :00:14.2: position_fix set to 1 for device 1458:a022 [7.820545] kernel: MCE: In-kernel MCE decoding enabled. [7.825161] kernel: EDAC amd64: Node 0: DRAM ECC disabled. [7.825163] kernel: EDAC amd64: ECC disabled in the BIOS or no ECC capability, module will not load. Either enable ECC checking or force module loading by setting 'ecc_enable_override'. (Note that use of the override may cause unknown side effects.) [7.873127] kernel: snd_hda_codec_realtek hdaudioC0D0: autoconfig for ALC889A: line_outs=4 (0x14/0x15/0x16/0x17/0x0) type:line [7.873143] kernel: snd_hda_codec_realtek hdaudioC0D0:speaker_outs=0 (0x0/0x0/0x0/0x0/0x0) [7.873144] kernel: snd_hda_codec_realtek hdaudioC0D0:hp_outs=1 (0x1b/0x0/0x0/0x0/0x0) [7.873145] kernel: snd_hda_codec_realtek hdaudioC0D0:mono: mono_out=0x0 [7.873146] kernel: snd_hda_codec_realtek hdaudioC0D0:dig-out=0x1e/0x0 [7.873147] kernel: snd_hda_codec_realtek hdaudioC0D0:inputs: [7.873149] kernel: snd_hda_codec_realtek hdaudioC0D0: Rear Mic=0x18 [7.873150] kernel: snd_hda_codec_realtek hdaudioC0D0: Front Mic=0x19 [7.873152] kernel: snd_hda_codec_realtek hdaudioC0D0: Line=0x1a [7.873153] kernel: snd_hda_codec_realtek hdaudioC0D0: CD=0x1c [7.873154] kernel: snd_hda_codec_realtek hdaudioC0D0:dig-in=0x1f [7.877268] kernel: EDAC amd64: Node 0: DRAM ECC disabled. [7.877271] kernel: EDAC amd64: ECC disabled in the BIOS or no ECC capability, module will not load. Either enable ECC checking or force module loading by setting 'ecc_enable_override'. (Note that use of the override may cause unknown side effects.) [7.885647] kernel: wlan0: Broadcom BCM43b1 802.11 Hybrid Wireless Controller 6.30.223.271 (r587334) [7.885648] kernel: [7.885816] kernel: snd_hda_intel :01:00.1: Disabling MSI [7.885827] kernel: snd_hda_intel :01:00.1: Handle vga_switcheroo audio client [7.920552] kernel: input: HDA ATI SB Rear Mic as /devices/pci:00/:00:14.2/sound/card0/input27 [7.920612] kernel: input: HDA ATI SB Front Mic as /devices/pci:00/:00:14.2/sound/card0/input28 [7.920657] kernel: input: HDA ATI SB Line as /devices/pci:00/:00:14.2/sound/card0/input29 [7.920704] kernel: input: HDA ATI SB Line Out Front as /devices/pci:00/:00:14.2/sound/card0/input30 [7.920749] kernel: input: HDA ATI SB Line Out Surround as /devices/pci:00/:00:14.2/sound/card0/input31 [7.920795] kernel: input: HDA ATI SB Line Out CLFE as /devices/pci:00/:00:14.2/sound/card0/input32 [7.920837] kernel: input: HDA ATI SB Line Out Side as /devices/pci:00/:00:14.2/sound/card0/input33 [8.035861] kernel: mc: Linux media interface: v0.10 [8.243472] kernel: videodev: Linux video capture interface: v2.00 [8.261622] kernel: usbcore: registered new interface driver r8152 [8.349483] kernel: usb 1-2.4: reset high-speed USB device number 7 using ehci-pci [8.413200] kernel: usbcore: registered new interface driver cdc_ether [8.417252] kernel: Bluetooth: Core ver 2.22 [8.417279] kernel: NET: Registered protocol family 31 [8.417280] kernel: Bluetooth: HCI device and connection manager initialized [8.417284] kernel: Bluetooth: HCI socket layer initialized [8.417286] kernel: Bluetooth: L2CAP socket layer initialized [8.417301] kernel: Bluetooth: SCO socket layer initialized [8.506254] kernel: r8152 1-2.4:1.0 eth0: v1.09.11 [8.674264] kernel: usbcore: registered new interface driver btusb [8.686155] kernel: input: HDA NVidia HDMI/DP,pcm=3 as /devices/pci:00/:00:02.0/:01:00.1/sound/card1/input34 [8.686215] kernel: input: HDA NVidia HDMI/DP,pcm=7 as /devices/pci:00/:00:02.0/:01:00.1/sound/card1/input35 [8.686264] kernel: input: HDA NVidia HDMI/DP,pcm=8 as /devices/pci:00/:00:02.0/:01:00.1/sound/card1/input36 [8.686317] kernel: input: HDA NVidia HDMI/DP,pcm=9 as /devices/pci:00/:00:02.0/:01:00.1/sound/card1/input37 [8.733961] kernel: usbcore: registered new interface driver snd-usb-audio [8.736521] kernel: uvcvideo: Found UVC 1.00 device Microsoft® LifeCam Studio(TM) (045e:0772) [8.779706] kernel: Bluetooth: hci0: BCM: chip id 63 [8.780703] kernel: Bluetooth: hci0: BCM: features 0x07 [8.796682] kernel: Bluetooth: hci0: hydra [8.800667] kernel: Bluetooth: hci0:
[Touch-packages] [Bug 1886714] Re: Bluetooth disconnects, and then sound fails on reconnect
There are several reports on the net talking about random disconnects with Bluetooth dongles reporting as BCM20702A0 and BCM20702A1, that might be important. Win10 experience the same problems, but it seems like they are able to recover. It seems like my HK Onyx Studio 4 has the same problem, but much less frequently. I have not tried to make any statistics though. I had a pair of Philips Bluetooth headphones that also had this problem. In short, I'm pretty sure it is not the devices that are the problem, although they may use the same chipset. I don't experience the same problem when the sound devices are attached to Android devices. So the problem persists over several sound devices, over several Bluetooth dongles, and over several mainboards. That should indicate that the problem somehow emerge from the system, even if Win10 seems to have fixed it to some degree. -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to bluez in Ubuntu. https://bugs.launchpad.net/bugs/1886714 Title: Bluetooth disconnects, and then sound fails on reconnect Status in bluez package in Ubuntu: New Bug description: This bug has persisted over several years, and several versions, and after a lot of investigation I'm not really any closer on what's going on. I have two pretty old GA MA78gm S2H mainboards, configured slightly different, and otherwise working properly. Both of them have run both Ubuntu and Windows. The problem seems to have been minimized when running Win10, and even if it is there it seems like Win10 recover when it happen. I wonder if I started noticing the problem under Ubuntu 14.x, but I'm pretty sure it was there already at Ubuntu 16.x. I'm now running Ubuntu 19.10 and Gnome 3.34.2. It isn't really an option to switch the mainboards, as there are too much custom-builds running on them for the moment. They will probably be replaced when I have time to rebuild everything. ;) To make Bluetooth work I use an ASUS USB-BT400, which report as “BCM920702 Bluetooth 4.0”, or more accurately “BCM20702A1 (001.002.014) build 1467”. I have also used other dongles, but it seems like all of them has the same chipset. Now… Given I restart the computer And boot into Ubuntu 19.10 And log in as myself And attach a pair of Sony MDR-ZX770BN When I listen to sound from a movie with A2DP Then at some random point it start to lag noticeably (sound becomes scratchy) And suddenly disconnects (at this point it seems like it is Bluetooth that disconnects) It may take 5–10 minutes and up to several hours before it disconnects. Given I turn the headphones off And back on When it reconnects to the computer Then the computer fails to enable the sound device (visible in the preference manager f.ex.) There are several reports of various equipments that disconnect, and I wonder if this could be the same problem. Problem 1 The dongle is rather hot when it disconnects. This is mere speculation, but I wonder if the disconnect happen because either the mainboard gives to little current and thus it fails due to voltage drop, or it fails due to overheating. It seems like the port should have enough current to sustain the dongle, but I wonder if the mainboard could let several ports share the same power source, and thus it fail to deliver enough current. There are other devices powered by the USB ports, and they don't seem to fail, which seems likely to happen if power is the issue. The issue seems to be somewhat related to the quality of the audio, which makes me wonder whether higher quality gives more transferred data, which again gives higher power consumption. It also seems like the issue can be triggered by moving away from the computer. That would give higher tx power, which could make the dongle overheat or mainboard could fail to provide enough current. Is there any way to get a more specific failure report from the dongle? Problem 2 After the headphone reconnects it seems like the sound system isn't working properly. I've been checking, and everything seems correct, still the headphone is missing as an output device. I have not been able to figure out what makes the sound system fail, and I have not been able to make it recover. Only way to recover seems to be to do a cold reboot. A simple warm reboot does not fix the problem, but this can be related to problem 1. A few dumps john@hydra:~$ dmesg | fgrep 'Blue' [3.089584] usb 1-2.2: Product: BCM920702 Bluetooth 4.0 [8.417252] Bluetooth: Core ver 2.22 [8.417280] Bluetooth: HCI device and connection manager initialized [8.417284] Bluetooth: HCI socket layer initialized [8.417286] Bluetooth: L2CAP socket layer initialized [8.417301] Bluetooth: SCO socket layer initialized [8.779706] Bluetooth: hci0: BCM: chip id 63 [8.780703]
