On Tue, 19 Jun 2018 10:38:50 +0200, Takashi Iwai wrote: > > On Tue, 19 Jun 2018 10:28:42 +0200, > Rafael J. Wysocki wrote: > > > > On Tue, Jun 19, 2018 at 8:12 AM, Takashi Iwai <tiwai@xxxxxxx> wrote: > > > Hi, > > > > > > there seems a regression regarding the probe of ACPI PnP devices. > > > The detailed logs are found in openSUSE bugzilla: > > > https://bugzilla.opensuse.org/show_bug.cgi?id=1098074 > > > > But that's on this particular machine, not in general, right? > > > > At least I don't see this on any of the systems in my office. > > Yes, it looks so. 4.17 and later works on my several machines, too. > > > > > > In short, since 4.17, the laptop keyboard is lost on ASUS K501UW. > > > Comparing the kernel messages and other logs indicates that the > > > complete lost of ACPI PnP devices: > > > > > > On 4.16: > > > [ 0.390244] pnp: PnP ACPI: found 9 devices > > > > > > On 4.17: > > > [ 0.263266] pnp: PnP ACPI: found 0 devices > > > > > > ... and this leads to the failure of PS/2 keyboard detection due to > > > the missing PNP030b entry as a result. > > > > > > Any hints for debugging this are appreciated. > > > > It looks like this may be related to the ACPICA changes that went in > > during the 4.17 cycle. > > > > I would try 4.18-rc1 as there is an ACPICA fix in it that may be > > related to this in theory. If that doesn't help, I'd focus on the > > ACPICA changes. > > OK, Noah, could you test later the kernel in OBS Kernel:HEAD repo? > Now 4.18-rc1 kernel is being built there, and hopefully will finish > soon later. 4.18-rc1 was confirmed to work, so something had fixed it. Also, the symptom appears not only on a single machine but on another (ASUS?) machine, according to the bug report. thanks, Takashi -- To unsubscribe from this list: send the line "unsubscribe linux-acpi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
