Blacklist floppy module to increase boot performance

[David Coronel]

The floppy module tries to probe for a floppy device but fails. This adds on average 7 seconds of boot time to Ubuntu (all versions). It's a trivial fix to blacklist the module.

$ echo "blacklist floppy" | sudo tee /etc/modprobe.d/blacklist-floppy.conf
$ sudo update-initramfs -u

[David Coronel (davecore)]

The new plan is to remove the floppy device from the GCP kernel.

[Andy Whitcroft (apw)]

Disabled CONFIG_BLK_DEV_FD. Test build currently under construction.

[Launchpad Janitor (janitor)]

This bug was fixed in the package linux-gcp - 4.13.0-1002.5

---------------
linux-gcp (4.13.0-1002.5) xenial; urgency=low

  * linux-gcp: 4.13.0-1002.5 -proposed tracker (LP: #1736153)

  [ Ubuntu: 4.13.0-19.22 ]

  * linux: 4.13.0-19.22 -proposed tracker (LP: #1736118)
  * CVE-2017-1000405
    - mm, thp: Do not make page table dirty unconditionally in touch_p[mu]d()

linux-gcp (4.13.0-1001.4) xenial; urgency=low

  * linux-gcp: 4.13.0-1001.4 -proposed tracker (LP: #1733526)
    - rebase to Ubuntu-4.13.0-18.21
    - update configs following rebase to Ubuntu-4.13.0-18.21

  [ Ubuntu: 4.13.0-18.21 ]

  * linux: 4.13.0-18.21 -proposed tracker (LP: #1733530)
  * NVMe timeout is too short (LP: #1729119)
    - nvme: update timeout module parameter type
  * CPU call trace on AMD Raven Ridge after S3 (LP: #1732894)
    - x86/mce/AMD: Allow any CPU to initialize the smca_banks array
  * Set PANIC_TIMEOUT=10 on Power Systems (LP: #1730660)
    - [Config]: Set PANIC_TIMEOUT=10 on ppc64el
  * Cannot pair BLE remote devices when using combo BT SoC (LP: #1731467)
    - Bluetooth: increase timeout for le auto connections
  * enable CONFIG_SND_SOC_INTEL_BYT_CHT_NOCODEC_MACH easily confuse users
    (LP: #1732627)
    - [Config] CONFIG_SND_SOC_INTEL_BYT_CHT_NOCODEC_MACH=n
  * Plantronics P610 does not support sample rate reading (LP: #1719853)
    - ALSA: usb-audio: Add sample rate quirk for Plantronics P610
  * Allow drivers to use Relaxed Ordering on capable root ports (LP: #1721365)
    - Revert commit 1a8b6d76dc5b ("net:add one common config...")
    - net: ixgbe: Use new PCI_DEV_FLAGS_NO_RELAXED_ORDERING flag
  * support GICv3 ITS save/restore & migration (LP: #1710019)
    - KVM: arm/arm64: vgic-its: Fix return value for device table restore
  * Device hotplugging with MPT SAS cannot work for VMWare ESXi (LP: #1730852)
    - scsi: mptsas: Fixup device hotplug for VMWare ESXi
  * Artful update to 4.13.13 stable release (LP: #1732726)
    - netfilter: nat: Revert "netfilter: nat: convert nat bysrc hash to
      rhashtable"
    - netfilter: nft_set_hash: disable fast_ops for 2-len keys
    - workqueue: Fix NULL pointer dereference
    - crypto: ccm - preserve the IV buffer
    - crypto: x86/sha1-mb - fix panic due to unaligned access
    - crypto: x86/sha256-mb - fix panic due to unaligned access
    - KEYS: fix NULL pointer dereference during ASN.1 parsing [ver #2]
    - ACPI / PM: Blacklist Low Power S0 Idle _DSM for Dell XPS13 9360
    - ARM: 8720/1: ensure dump_instr() checks addr_limit
    - ALSA: timer: Limit max instances per timer
    - ALSA: usb-audio: support new Amanero Combo384 firmware version
    - ALSA: hda - fix headset mic problem for Dell machines with alc274
    - ALSA: seq: Fix OSS sysex delivery in OSS emulation
    - ALSA: seq: Avoid invalid lockdep class warning
    - MIPS: Fix CM region target definitions
    - MIPS: BMIPS: Fix missing cbr address
    - MIPS: AR7: Defer registration of GPIO
    - MIPS: AR7: Ensure that serial ports are properly set up
    - KVM: PPC: Book3S HV: Fix exclusion between HPT resizing and other HPT
      updates
    - Input: elan_i2c - add ELAN060C to the ACPI table
    - rbd: use GFP_NOIO for parent sta...