** Description changed: - When testing WCN3980 with 20.04 and UC20, WCN3980 is not able connect to - an AP. + [ Impact ] + When testing Qualcomm qcs410 with WCN3980 with 20.04 and UC20, WCN3980 is not able connect to an AP. - I tried a different libnl3 from BSP and found that WCN3980 can work - correctly. The version used in BSP is 3.5.0. + However, with the libnl3 (3.5.0) from BSP, WCN3980 can work correctly. - I bisected the commits from 3.4.0 to 3.5.0 and found this commit[1] is the root cause. - According to the commit, it seems that the flag should be set for kernel later than 5.2. + After bisecting the commits from 3.4.0 to 3.5.0, this commit[1] is + identified as the root cause. + + According to the commit, the "NLA_F_NESTED" flag should be set for + kernel later than 5.2. + + [ Test Plan ] + Verify with the updated version, the WIFI module can: + 1. scan WIFI networks + 2. connect to an available network + 3. access to the connected network + + [ Where problems could occur ] + 1. kernel versions without NLA_F_NESTED flag defined + This flag is introduced before Linux kernel v5 (checked v3.x and v4.x have it). It would not be a problem for an older kernel to understand/work with this change. Since the GA kernel is 5.4, so a generic image would still work. + + 2. Drivers don't use the NESTED flag. + According to hui.wang's input, this change should not affect drivers which don't use the NESTED flag. But, it'd be better to cover more Wifi modules. + + [ Other Info ] + 22.04 is using libnl3 3.0.5-0.1, so only 20.04 needs this patch. [1] https://github.com/thom311/libnl/commit/7de65a051fb37ece16f896a7385073274b77a133
-- You received this bug notification because you are a member of Desktop Packages, which is subscribed to libnl3 in Ubuntu. https://bugs.launchpad.net/bugs/1998765 Title: libnl3 3.4.0 doesn't work with WCN3980 Status in OEM Priority Project: New Status in libnl3 package in Ubuntu: New Bug description: [ Impact ] When testing Qualcomm qcs410 with WCN3980 with 20.04 and UC20, WCN3980 is not able connect to an AP. However, with the libnl3 (3.5.0) from BSP, WCN3980 can work correctly. After bisecting the commits from 3.4.0 to 3.5.0, this commit[1] is identified as the root cause. According to the commit, the "NLA_F_NESTED" flag should be set for kernel later than 5.2. [ Test Plan ] Verify with the updated version, the WIFI module can: 1. scan WIFI networks 2. connect to an available network 3. access to the connected network [ Where problems could occur ] 1. kernel versions without NLA_F_NESTED flag defined This flag is introduced before Linux kernel v5 (checked v3.x and v4.x have it). It would not be a problem for an older kernel to understand/work with this change. Since the GA kernel is 5.4, so a generic image would still work. 2. Drivers don't use the NESTED flag. According to hui.wang's input, this change should not affect drivers which don't use the NESTED flag. But, it'd be better to cover more Wifi modules. [ Other Info ] 22.04 is using libnl3 3.0.5-0.1, so only 20.04 needs this patch. [1] https://github.com/thom311/libnl/commit/7de65a051fb37ece16f896a7385073274b77a133 To manage notifications about this bug go to: https://bugs.launchpad.net/oem-priority/+bug/1998765/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
