I noticed a few days ago, after Fedora moved to Kernel 6.5, that my Intel LTE Modem was not working anymore after resuming from standby. The journal listed this error message multiple times: kernel: iosm 0000:01:00.0: msg timeout It took me a while to determine the root cause of the problem, since the modem did not work either in the following warm reboots. Only a shutdown revived the modem. I did a bisection of the error and I was able to find the culprit: [e4f5073d53be6cec0c654fac98372047efb66947] net: wwan: iosm: enable runtime pm support for 7560
(In reply to Martin from comment #0) > I noticed a few days ago, after Fedora moved to Kernel 6.5, that my Intel > LTE Modem was not working anymore after resuming from standby. > > The journal listed this error message multiple times: > kernel: iosm 0000:01:00.0: msg timeout > > It took me a while to determine the root cause of the problem, since the > modem did not work either in the following warm reboots. > Only a shutdown revived the modem. > > I did a bisection of the error and I was able to find the culprit: > > [e4f5073d53be6cec0c654fac98372047efb66947] net: wwan: iosm: enable runtime > pm support for 7560 Can you attach dmesg output when this issue happens?
Created attachment 305206 [details] dmesg after suspend with affected kernel (6.5.6) I booted an affected kernel (6.5.6-1-200 from fedora repo, but Thorsten Leemhuis vanilla kernels are also affected) and sent my notebook into standby. On resume the device was gone and the error messages according "iosm" appeared.
also I should mention, that if this error occurs, I am unable to shutdown my system anymore. "poweroff" does not turn the laptop off, it simply triggers a reboot, where the modem is still not functional. Only pressing the powerbutton >4 secs "resets" the device.
(In reply to Martin from comment #0) > I noticed a few days ago, after Fedora moved to Kernel 6.5, that my Intel > LTE Modem was not working anymore after resuming from standby. > > The journal listed this error message multiple times: > kernel: iosm 0000:01:00.0: msg timeout > > It took me a while to determine the root cause of the problem, since the > modem did not work either in the following warm reboots. > Only a shutdown revived the modem. > > I did a bisection of the error and I was able to find the culprit: > > [e4f5073d53be6cec0c654fac98372047efb66947] net: wwan: iosm: enable runtime > pm support for 7560 Hi Martin, I have posted revert proposal at [1]. Please test. [1]: https://lore.kernel.org/netdev/20231017080812.117892-1-bagasdotme@gmail.com/
yes, that patch does the trick, thank you!
On 17/10/2023 19:33, bugzilla-daemon@kernel.org wrote: > https://bugzilla.kernel.org/show_bug.cgi?id=217996 > > --- Comment #5 from Martin (mwolf@adiumentum.com) --- > yes, that patch does the trick, thank you! > OK, I will add your Tested-by: trailer in v2.