Re: Lenovo A740 gave up waiting for root device with kernels >= 4.3

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(cc'ing ACPI folks and retaining message body for context)

On Tue, Jul 05, 2016 at 11:01:53AM +0530, Navin P.S wrote:
> On Mon, Jul 4, 2016 at 8:55 PM, Kevin Brubeck Unhammer
> <unhammer@xxxxxxxx> wrote:
> >
> > Hi again,
> >
> > Navin found a workaround: acpi=noirq (and pci=noacpi) lets me boot with
> > the newer kernels.
> >
> > Attached are dmesg's from 4.7rc2 and 4.7rc5 from
> > http://kernel.ubuntu.com/~kernel-ppa/mainline/ (rc5 complained about
> > missing noveau firmware; I haven't tried the newest linux-firmware
> > package yet, but haven't yet seen anything *not* working in rc5 that was
> > working in rc2).
> >
> >
> > Other changes when using acpi=noirq that may or may not be relevant:
> > The computer will now poweroff when I do a shutdown, and restarts
> > correctly (it used to just "hang" at the end of the shutdown sequence),
> > and a bluetooth device shows up that I didn't know I had. However,
> > although I seem to be able to suspend, I can't resume (no response when
> > hitting power button). All in all an improvement though …
> >
> >
> >
> > best regards,
> > Kevin Brubeck Unhammer
> >
> >
> >
> > "Navin P.S" <navinp1912@xxxxxxxxx> čálii:
> >
> > > On Mon, Jun 6, 2016 at 1:01 PM, Kevin Brubeck Unhammer
> > > <unhammer@xxxxxxxx> wrote:
> > >> Hi,
> > >>
> > >> I have a Lenovo A740 (running Xubuntu 16.04) which, with kernel
> > >> versions >= 4.3.0, tested up until 4.7.0, gives this on trying to boot:
> > >>
> > >>   Begin: Waiting for root file system ... Begin: Running
> > >>   /scripts/local-block ... done.
> > >>   Begin: Running /scripts/local-block ... done.
> > >>   Begin: Running /scripts/local-block ... done.
> > >>   […]
> > >>   done.
> > >>   Gave up waiting for root device.
> > >>
> > >> and drops me into an (initramfs) shell, where my keyboard is
> > >> unresponsive. The last kernel I tried which booted fine was 4.2.8.
> > >>
> > >> I reported this at https://bugzilla.kernel.org/show_bug.cgi?id=118401
> > >> and, after some investigation, was asked to contact ahci.c - AHCI SATA
> > >> support. The attachments in that report show some output from initramfs
> > >> (using a script in /etc/initramfs-tools/scripts/init-premount due to the
> > >> keyboard not working).
> > >>
> > >> What should I do to keep debugging this issue?
> > >>
> > >
> > > I have been working with Kevin on the bug 118401 .
> > >
> > > I'll post the summary.
> > > The kernel 4.2 works and he is able to boot the system.
> > > Kernel 4.4 and 4.6, 4.7  drops into initramfs shell for the same uuid.
> > > Upon further investigation cat /proc/devices showed no block devices
> > > other than zram and loop.The command /sbin/blkid on 4.6 and later
> > > didn't give any output whereas on 4.2 it does.
> > >
> > > Kernel 4.2 shows the ahci used count is 3
> > > ahci 36864 3 - Live 0x0000000000000000
> > > libahci 32768 1 ahci, Live 0x0000000000000000
> > >
> > > Where kernel 4.7 doesn't load the ahci module upon boot and upon
> > > modprobe ahci from the initramfs shell it shows the ahci count as 0.
> > > So it is not detecting the drive. Not sure why ?
> > >
> > > Some more things to note from 4.2 dmesg it prints not sure if it is relevant.
> > >
> > > [    0.716610] ahci 0000:00:1f.2: version 3.0
> > > [    0.716620] ahci 0000:00:1f.2: can't find IRQ for PCI INT B;
> > > probably buggy MP table
> > >
> > > [    0.735267] ahci 0000:00:1f.2: AHCI 0001.0300 32 slots 4 ports 6
> > > Gbps 0x1 impl SATA mode
> > >
> > > [    0.746033] ata1: SATA max UDMA/133 abar m2048@0xb5618000 port
> > > 0xb5618100 irq 44
> > >
> > > [    1.068001] ata1: SATA link up 6.0 Gbps (SStatus 133 SControl 300)
> > >
> > > [    1.134029] ata1.00: ATA-8: ST1000LM014-1EJ164-SSHD-8GB, LIV6, max UDMA/133
> > > [    1.134030] ata1.00: 1953525168 sectors, multi 0: LBA48 NCQ (depth 31/32), AA
> > > [    1.178470] ata1.00: configured for UDMA/133
> > > [    1.178620] scsi 0:0:0:0: Direct-Access     ATA
> > > ST1000LM014-1EJ1 LIV6 PQ: 0 ANSI: 5
> > > [    1.178853] sd 0:0:0:0: [sda] 1953525168 512-byte logical blocks:
> > > (1.00 TB/931 GiB)
> > > [    1.178855] sd 0:0:0:0: [sda] 4096-byte physical blocks
> > > [    1.178879] sd 0:0:0:0: [sda] Write Protect is off
> > > [    1.178881] sd 0:0:0:0: [sda] Mode Sense: 00 3a 00 00
> > >
> > >
> > > where as 4.6 and later doesn't print these messages.dmesg | grep
> > > ata[0-4] gives no output.
> > >
> > > lspci on 4.2 gives this
> > >
> > > 00:1f.2 SATA controller: Intel Corporation 8 Series SATA Controller 1
> > > [AHCI mode] (rev 04) (prog-if 01 [AHCI 1.0])
> > > Subsystem: Lenovo 8 Series SATA Controller 1 [AHCI mode]
> > > Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr-
> > > Stepping- SERR- FastB2B- DisINTx+
> > > Status: Cap+ 66MHz+ UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort-
> > > <TAbort- <MAbort- >SERR- <PERR- INTx-
> > > Latency: 0
> > > Interrupt: pin B routed to IRQ 44
> > > Region 0: I/O ports at 6088 [size=8]
> > > Region 1: I/O ports at 6094 [size=4]
> > > Region 2: I/O ports at 6080 [size=8]
> > > Region 3: I/O ports at 6090 [size=4]
> > > Region 4: I/O ports at 6060 [size=32]
> > > Region 5: Memory at b5618000 (32-bit, non-prefetchable) [size=2K]
> > > Capabilities: [80] MSI: Enable+ Count=1/1 Maskable- 64bit-
> > > Address: fee0400c  Data: 4181
> > > Capabilities: [70] Power Management version 3
> > > Flags: PMEClk- DSI- D1- D2- AuxCurrent=0mA PME(D0-,D1-,D2-,D3hot+,D3cold-)
> > > Status: D0 NoSoftRst+ PME-Enable- DSel=0 DScale=0 PME-
> > > Capabilities: [a8] SATA HBA v1.0 BAR4 Offset=00000004
> > > Kernel driver in use: ahci
> > > Kernel modules: ahci
> 
> 
> Hi,
> 
>    The default kernel parametes doesn't detect disk whereas when you
> pass kernel command line (acpi=noirq or pci=noacpi) the disk is
> detected and the machine is usable.
> Should this be forwarded to linux-acpi list ?
> 
> This machine was usuable without any arguments like acpi=noirq and
> pci=noacpi in 4.2 .
> 
> What does this usually indicate buggy bios ?
> 
> I can see some parse execution error in dmesg attached.

Yeah, looks like an IRQ routing problem.  cc'd ACPI folks.

Thanks.

-- 
tejun
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