In 5.4 Focal CONFIG_QRTR depends on ARCH_QCOM, which is a platform config that enables ARMv8 based Qualcomm chipsets, so it can not be enabled on amd64. Also CONFIG_QRTR_MHI is not present in 5.4, which means that the implementation is incomplete with respect to what modemmanager is expecting.
In later releases like Jammy, CONFIG_QRTR has no dependency on ARCH_QCOM and therefore is enabled on amd64. All QRTR modules are also there. Enabling QRTR in 5.4 kernel would require backporting patches to remove its dependence on ARCH_QCOM and to add MHI module. It is suggested to check modulemanager implementation whether hard requirement on QRTR modules can be skipped on amd64. -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1998194 Title: Please add support for Qualcomm IPC Router in 5.4 focal kernel Status in OEM Priority Project: New Status in linux package in Ubuntu: Confirmed Bug description: The modemmanager debian package in focal was recently upgraded to 1.18 (the jammy version was backported - see LP: #1965901). This version has broken some Qualcomm modems as it start to require the Qualcomm IPC Router for them, which drivers are not enabled in Ubuntu kernel 5.4. To fix this we need these options enabled in the focal kernel: CONFIG_QRTR=m CONFIG_QRTR_SMD=m CONFIG_QRTR_TUN=m CONFIG_QRTR_MHI=m The options are already enabled in more modern Ubuntu kernel, i.e. 5.17. To manage notifications about this bug go to: https://bugs.launchpad.net/oem-priority/+bug/1998194/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
