Hi, On 29-04-18 09:25, Hans de Goede wrote:
Hi All, I'm sending this to the fedora-kernel and -devel lists both to get the kernel team aware of this and because it is not entirely clear to me how to best deal with this. I guess we should get this added to the release-notes / common-bugs page for F28, but I'm not sure what the procedure is for that ? I've just become aware that at least for some users the use of SATA LPM in F28 causes the Lenovo 50 series laptops (confirmed X250, T450s G50-80) freeze/ hang hard under certain conditions when using SATA LPM, independent of the disk used (*). This is currently being tracked in: https://bugzilla.redhat.com/show_bug.cgi?id=1571330 A known workaround is to add: "ahci.mobile_lpm_policy=0" to the kernel boot command line. Can someone help me to get this documented? Once we've figured out what is going on I hope to be able to fix this with a kernel update, but people may still need the workaround to install Fedora 28. Also if people are using Fedora 28 on a 50 series Lenovo laptop without issues, please let me know.
Some more info on this, the user with a x250 is reporting the problem is hard-freeze about once a day, which goes away when disabling LPM, so if you have a 50 series Lenovo laptop and are seeing the occasional hard-freeze this may be the cause. Regards, Hans _______________________________________________ kernel mailing list -- kernel@xxxxxxxxxxxxxxxxxxxxxxx To unsubscribe send an email to kernel-leave@xxxxxxxxxxxxxxxxxxxxxxx
