On Sat, Nov 2, 2019 at 5:46 AM Jeffrin Thalakkottoor <jeffrin@xxxxxxxxxxxxxxxxxxx> wrote: > > hello , > > i found a error message as the output of "sudo dmesg -l err" > i have attached related to that in this email. > i think i found this in 5.3.8 kernel Use "uname -a" to get the current kernel version, architecture. > But i think when i tried again today i could not reproduce it That's unfortunate, but it might have just been a transient problem. The log has a pile of these AER errors: [ 283.723848] pcieport 0000:00:1c.5: AER: PCIe Bus Error: severity=Corrected, type=Data Link Layer, (Transmitter ID) [ 283.723855] pcieport 0000:00:1c.5: AER: device [8086:9d15] error status/mask=00001000/00002000 [ 283.723859] pcieport 0000:00:1c.5: AER: [12] Timeout Which looks like a root port is getting a timeouts while trying to talk to its downstream device. It's hard to say anything more without knowing what the downstream device is, or what the system is. If this is a laptop it might be due to buggy power management, but it might just be flakey hardware. Can you provide the full dmesg and the output of lspci -vv? Oliver