[Touch-packages] [Bug 1418077] Re: After radio technology is changed, mobile-data takes ~5m to re-connect
** Tags added: lt-category-visible -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to network-manager in Ubuntu. https://bugs.launchpad.net/bugs/1418077 Title: After radio technology is changed, mobile-data takes ~5m to re-connect Status in the base for Ubuntu mobile products: In Progress Status in network-manager package in Ubuntu: In Progress Bug description: Steps to reproduce: 1. Confirm cellular data (disable wifi) 2. Change TechnologyPreference on online SIM 3. Confirm no cellular data 4. Wait ~10 minutes 5. Confirm cellular data What happens: Changing something on the modem causes cellular data to disappear for 10 minutes What should happen: It should behave as before, i.e. cellular data should come back immediately current build number: 97 device name: krillin channel: ubuntu-touch/devel-proposed alias: ubuntu-touch/vivid-proposed last update: 2015-02-02 12:48:25 version version: 97 version ubuntu: 20150202 version device: 20150128-5379bdb version custom: 20150202 To manage notifications about this bug go to: https://bugs.launchpad.net/canonical-devices-system-image/+bug/1418077/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp
[Touch-packages] [Bug 1418077] Re: After radio technology is changed, mobile-data takes ~5m to re-connect
So confirmed that adding a case for NM_DEVICE_STATE_REASON_MODEM_NO_CARRIER in device_state_changed ( nm- device-modem.c ), causes the connection to be blocked from auto- connecting. I still see the initial retries decrement log message in device_state_changed ( nm-policy.c ), I mentioned this is due to the transition of the device from 'Activated' to 'Failed', it's not a new activation attempt. When this is logged( w/retries=4 ), I don't see any subsequent attempts to retry, ever. nm-policy controls the clearing of the connection's 'autoconnect_blocked_reason' ( which is what gets used in this scenario to block autoconnect ), and at the moment, nothing done by the NM ofono code is triggering the right state changes to clear the reason when 'Attached' becomes TRUE again. Nor is there a timer set, as is done when an autoconnect sequence exceeds it's retry count ( ie. the ~5m timer mentioned above ). -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to network-manager in Ubuntu. https://bugs.launchpad.net/bugs/1418077 Title: After radio technology is changed, mobile-data takes ~5m to re-connect Status in the base for Ubuntu mobile products: In Progress Status in network-manager package in Ubuntu: In Progress Bug description: Steps to reproduce: 1. Confirm cellular data (disable wifi) 2. Change TechnologyPreference on online SIM 3. Confirm no cellular data 4. Wait ~10 minutes 5. Confirm cellular data What happens: Changing something on the modem causes cellular data to disappear for 10 minutes What should happen: It should behave as before, i.e. cellular data should come back immediately current build number: 97 device name: krillin channel: ubuntu-touch/devel-proposed alias: ubuntu-touch/vivid-proposed last update: 2015-02-02 12:48:25 version version: 97 version ubuntu: 20150202 version device: 20150128-5379bdb version custom: 20150202 To manage notifications about this bug go to: https://bugs.launchpad.net/canonical-devices-system-image/+bug/1418077/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp
[Touch-packages] [Bug 1418077] Re: After radio technology is changed, mobile-data takes ~5m to re-connect
So what seems to be happening, is that the radio technology switch causes the modem to unregister from the current carrier, and attempt to re-register using the new tech preference ( eg. umts, lte, gsm, ... ). This will cause the ofono ConnectionManager 'Attached' property to return FALSE until the phone re-registers and re-attaches to GPRS. NM detects the device change state from 'Activated' to 'Failed' ( more on this later ) and in turn schedules an auto-activation attempt of the connection ( context1 ). As the modem's not attached, the activation fails and the retry_count gets decremented, and it tries again repeatedly ( with no delay ), until the retry_count ( initialized to four ) drops to zero. At this point, NM disables the connection and adds a timeout of 300s in the future which will call a policy function that resets the connection's retry_count, and triggers a new autoconnect sequence. 300s / 60s/m == 5m, our mysterious delay. What we need is some mechanism for autoconnect to be blocked when the modem is not registered. It looks like nm-device-modem.c implements something like this in it's device_state_changed(). It checks a bunch of reason codes, but NM_DEVICE_STATE_REASON_MODEM_NO_CARRIER ( which is the error returned by stage1 if the modem isn't registered ) isn't checked. The code also would need a mechanism which would re-enable the autoconnect when the device becomes enabled again ( ie. when 'Attached' becomes TRUE again ). Also with regards to the device 'Activated' to 'Failed' transition, it's a bit odd that 'Disconnected' isn't used, as 'Failed' causes a retry attempt to be wasted ( see nm-policy.c ) because device_state_changed() treats a new state of FAILED as a connect failure and decrements the retry_count. -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to network-manager in Ubuntu. https://bugs.launchpad.net/bugs/1418077 Title: After radio technology is changed, mobile-data takes ~5m to re-connect Status in the base for Ubuntu mobile products: In Progress Status in network-manager package in Ubuntu: In Progress Bug description: Steps to reproduce: 1. Confirm cellular data (disable wifi) 2. Change TechnologyPreference on online SIM 3. Confirm no cellular data 4. Wait ~10 minutes 5. Confirm cellular data What happens: Changing something on the modem causes cellular data to disappear for 10 minutes What should happen: It should behave as before, i.e. cellular data should come back immediately current build number: 97 device name: krillin channel: ubuntu-touch/devel-proposed alias: ubuntu-touch/vivid-proposed last update: 2015-02-02 12:48:25 version version: 97 version ubuntu: 20150202 version device: 20150128-5379bdb version custom: 20150202 To manage notifications about this bug go to: https://bugs.launchpad.net/canonical-devices-system-image/+bug/1418077/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp
[Touch-packages] [Bug 1418077] Re: After radio technology is changed, mobile-data takes ~5m to re-connect
** Changed in: canonical-devices-system-image Status: Confirmed => Won't Fix ** Changed in: canonical-devices-system-image Status: Won't Fix => In Progress ** Changed in: canonical-devices-system-image Milestone: ww09-2015 => ww13-2015 -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to network-manager in Ubuntu. https://bugs.launchpad.net/bugs/1418077 Title: After radio technology is changed, mobile-data takes ~5m to re-connect Status in the base for Ubuntu mobile products: In Progress Status in network-manager package in Ubuntu: In Progress Bug description: Steps to reproduce: 1. Confirm cellular data (disable wifi) 2. Change TechnologyPreference on online SIM 3. Confirm no cellular data 4. Wait ~10 minutes 5. Confirm cellular data What happens: Changing something on the modem causes cellular data to disappear for 10 minutes What should happen: It should behave as before, i.e. cellular data should come back immediately current build number: 97 device name: krillin channel: ubuntu-touch/devel-proposed alias: ubuntu-touch/vivid-proposed last update: 2015-02-02 12:48:25 version version: 97 version ubuntu: 20150202 version device: 20150128-5379bdb version custom: 20150202 To manage notifications about this bug go to: https://bugs.launchpad.net/canonical-devices-system-image/+bug/1418077/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp
[Touch-packages] [Bug 1418077] Re: After radio technology is changed, mobile-data takes ~5m to re-connect
** Changed in: network-manager (Ubuntu) Status: Confirmed => In Progress ** Changed in: network-manager (Ubuntu) Assignee: Mathieu Trudel-Lapierre (mathieu-tl) => Tony Espy (awe) -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to network-manager in Ubuntu. https://bugs.launchpad.net/bugs/1418077 Title: After radio technology is changed, mobile-data takes ~5m to re-connect Status in the base for Ubuntu mobile products: Confirmed Status in network-manager package in Ubuntu: In Progress Bug description: Steps to reproduce: 1. Confirm cellular data (disable wifi) 2. Change TechnologyPreference on online SIM 3. Confirm no cellular data 4. Wait ~10 minutes 5. Confirm cellular data What happens: Changing something on the modem causes cellular data to disappear for 10 minutes What should happen: It should behave as before, i.e. cellular data should come back immediately current build number: 97 device name: krillin channel: ubuntu-touch/devel-proposed alias: ubuntu-touch/vivid-proposed last update: 2015-02-02 12:48:25 version version: 97 version ubuntu: 20150202 version device: 20150128-5379bdb version custom: 20150202 To manage notifications about this bug go to: https://bugs.launchpad.net/canonical-devices-system-image/+bug/1418077/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp
[Touch-packages] [Bug 1418077] Re: After radio technology is changed, mobile-data takes ~5m to re-connect
** Summary changed: - NM fails to create a cellular data connection for a unacceptably long time + After radio technology is changed, mobile-data takes ~5m to re-connect -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to network-manager in Ubuntu. https://bugs.launchpad.net/bugs/1418077 Title: After radio technology is changed, mobile-data takes ~5m to re-connect Status in the base for Ubuntu mobile products: Confirmed Status in network-manager package in Ubuntu: Confirmed Bug description: Steps to reproduce: 1. Confirm cellular data (disable wifi) 2. Change TechnologyPreference on online SIM 3. Confirm no cellular data 4. Wait ~10 minutes 5. Confirm cellular data What happens: Changing something on the modem causes cellular data to disappear for 10 minutes What should happen: It should behave as before, i.e. cellular data should come back immediately current build number: 97 device name: krillin channel: ubuntu-touch/devel-proposed alias: ubuntu-touch/vivid-proposed last update: 2015-02-02 12:48:25 version version: 97 version ubuntu: 20150202 version device: 20150128-5379bdb version custom: 20150202 To manage notifications about this bug go to: https://bugs.launchpad.net/canonical-devices-system-image/+bug/1418077/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp
