On Tue, Nov 12, 2013 at 9:02 AM, Emmanuel Grumbach <egrumbach@xxxxxxxxx> wrote: > On Tue, Nov 12, 2013 at 7:42 AM, wzyboy <wzyboy@xxxxxxxxxx> wrote: >> Hi, I've got some good news. Here is what I did today: >> >> boot up laptop -> do the sysfs trick -> start downloading a big file >> to benchmark it -> several minutes later the bug occurs -> reboot my >> laptop to recover -> do the setpci trick -> start downloading a big >> file to benchmark it -> more than 5 GiB downloaded (at ~ 2.3 MiB/s) >> and everything works fine! > > encouraging. Thanks. > I just wonder... the patch I sent was supposed to tell the HW not to > use L1. So I would have hoped it would have helped in the same way? > After all, L1 is a handshake between the device and the bridge, so > that if the device doesn't initiate / refuses to go into L1, I'd > expect it to have the same effect as disabling L1 in the ASPM register > PCIe config space? > Obviously I am wrong though. > can you please try to see if you have BIOS updates? (It seems that all the BIOS update tools run on windows... - but I can have a bootable CD :)) You can also check this out: http://www-947.ibm.com/support/entry/portal/docdisplay?lndocid=TOOL-ASU This might help to remove support for L1 substates. I guess it'd be nice to ask Lenovo too about how to find these options in BIOS. From our experience, there are a lot of features and options in BIOS that are accessible only after you enter a "secret" (I meant obscure) sequence of keys. >> >> Here are the output of lspci -vv after running two "setpci" commands. >> >> There is also a screenshot of ThinkPad X240s HMM, showing how the >> wireless card is connected to the motherboard. In this figure #10 is >> the Wireless LAN card. It is connected to the motherboard with Intel's >> NGFF connector. >> >> I will continue downloading big files to benchmark it. >> > > Thanks > >> -- >> wzyboy -- To unsubscribe from this list: send the line "unsubscribe linux-pci" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
