On Tuesday, 7 June 2022 22:01:03 CEST Luca wrote: > > This sounds like a BIOS problem to me. Have you checked whether a new one > > is available? > The first thing I did after buying the laptop was updating the BIOS to the > last version, just before wiping the original Windows installation and I > was lucky since from what I found so far seems that Lenovo does not give > other possibilities for BIOS update for my model! (I don't know how will I > do for the next BIOS version that will be released in the future) If you have a Thinkpad, then you should be able to update fw using fwupd package. Also see https://fwupd.org/ for more info. If your device is not supported, then 'nagging' Lenovo about providing updates through that site/service is your best chance. Using the Lenovo forums may also help as when I last looked there, I wasn't the only one using Linux ;-) > I forgot to mention that apart the long time to load, then the battery ACPI > support seems to work properly, reporting all the informations > (charging/dischargin rate, last full cacpcity, desing capacity etc..) That's good as it means it's not entirely broken. > > To see/verify whether it may be a kernel issue, it's useful to test other > > kernel versions. If it works properly with another kernel version, then > > it's mostly likely a kernel issue, but if it's consistently slow across > > kernel versions, then a HW/BIOS problem seems most likely. > I just did the tests you suggested measuring precisely with /usr/bin/time > > 5.10.0-10-amd64 0.00user 0.00system 0:07.57elapsed 0%CPU > 5.10.0-14-amd64 ~8.55s (was builtin, not module) > 5.16.0-0.bpo.4-amd64 0.00user 0.00system 0:07.74elapsed 0%CPU > > kernel source built by me: > 5.18.2-mrf0 0.00user 0.00system 0:07.48elapsed 0%CPU > > If you need other tests I can carry on. They all show the same delay, which strengthens my idea that it is a BIOS issue. So AFAIC, no further test are needed. > Don't know if it's related, but I get lots of error lines during kernel boot > like these: > > ... > [ 0.248050] ACPI BIOS Error (bug): Failure creating named object > [\_SB.PCI0.T XHC.RHUB.SS01._UPC], AE_ALREADY_EXISTS (20210730/dswload2-327) > [ 0.248057] ACPI Error: AE_ALREADY_EXISTS, During name lookup/catalog > (202107 30/psobject-221) > [ 0.248060] ACPI: Skipping parse of AML opcode: OpcodeName unavailable > (0x001 4) > ... I'd say that's VERY related. I'm pretty much convinced it is a BIOS problem. > I tried various acpi_osi=... without any improvement. From what I understand > it should not be a dramatic problem and seems not to affect the system so > far. I know these kind of options exist, but I'm not familiar with them, so *I* won't be able to help you with that. I think your best course of action is starting (or if one with your issues already exists, joining) a thread on Lenovo's forums and/or try other ways to contact their support. It's best to provide a full dmesg/kernel log and let any filtering up to them. Other messages may give them clues which are not immediate apparent to you.
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