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[Bug 1416451] Re: Can't switch display mode more than one cycle when docked

To: kernel-packages@xxxxxxxxxxxxxxxxxxx
From: Launchpad Bug Tracker <1416451@xxxxxxxxxxxxxxxxxx>
Date: Tue, 24 Feb 2015 19:58:45 -0000
Reply-to: Bug 1416451 <1416451@xxxxxxxxxxxxxxxxxx>
Sender: bounces@xxxxxxxxxxxxx
This bug was fixed in the package linux - 3.13.0-46.75

---------------
linux (3.13.0-46.75) trusty; urgency=low

  [ Seth Forshee ]

  * Release Tracking Bug
    - LP: #1419963

  [ Andy Whitcroft ]

  * [Debian] arm64 -- build ubuntu drivers
    - LP: #1411284
  * hyper-v -- fix comment handing in /etc/network/interfaces
    - LP: #1413020

  [ Kamal Mostafa ]

  * [Packaging] force "dpkg-source -I -i" behavior

  [ Upstream Kernel Changes ]

  * Revert "[SCSI] mpt2sas: Remove phys on topology change."
    - LP: #1419838
  * Revert "[SCSI] mpt3sas: Remove phys on topology change"
    - LP: #1419838
  * Btrfs: fix transaction abortion when remounting btrfs from RW to RO
    - LP: #1411320
  * Btrfs: fix a crash of clone with inline extents's split
    - LP: #1413129
  * net/mlx4_en: Add VXLAN ndo calls to the PF net device ops too
    - LP: #1407760
  * KVM: x86: SYSENTER emulation is broken
    - LP: #1414651
    - CVE-2015-0239
  * powerpc/xmon: Fix another endiannes issue in RTAS call from xmon
    - LP: #1415919
  * ipv6: fix swapped ipv4/ipv6 mtu_reduced callbacks
    - LP: #1404558, #1419837
  * usb: gadget: at91_udc: move prepare clk into process context
    - LP: #1419837
  * KVM: x86: Fix far-jump to non-canonical check
    - LP: #1419837
  * x86/tls: Validate TLS entries to protect espfix
    - LP: #1419837
  * userns: Check euid no fsuid when establishing an unprivileged uid
    mapping
    - LP: #1419837
  * userns: Document what the invariant required for safe unprivileged
    mappings.
    - LP: #1419837
  * userns: Only allow the creator of the userns unprivileged mappings
    - LP: #1419837
  * x86_64, switch_to(): Load TLS descriptors before switching DS and ES
    - LP: #1419837
  * isofs: Fix infinite looping over CE entries
    - LP: #1419837
  * batman-adv: Calculate extra tail size based on queued fragments
    - LP: #1419837
  * KEYS: close race between key lookup and freeing
    - LP: #1419837
  * isofs: Fix unchecked printing of ER records
    - LP: #1419837
  * x86_64, vdso: Fix the vdso address randomization algorithm
    - LP: #1419837
  * groups: Consolidate the setgroups permission checks
    - LP: #1419837
  * userns: Don't allow setgroups until a gid mapping has been setablished
    - LP: #1419837
  * userns: Don't allow unprivileged creation of gid mappings
    - LP: #1419837
  * move d_rcu from overlapping d_child to overlapping d_alias
    - LP: #1419837
  * deal with deadlock in d_walk()
    - LP: #1419837
  * Linux 3.13.11-ckt14
    - LP: #1419837
  * gre: fix the inner mac header in nbma tunnel xmit path
    - LP: #1419838
  * netlink: Always copy on mmap TX.
    - LP: #1419838
  * netlink: Don't reorder loads/stores before marking mmap netlink frame
    as available
    - LP: #1419838
  * in6: fix conflict with glibc
    - LP: #1419838
  * tg3: tg3_disable_ints using uninitialized mailbox value to disable
    interrupts
    - LP: #1419838
  * batman-adv: Unify fragment size calculation
    - LP: #1419838
  * batman-adv: avoid NULL dereferences and fix if check
    - LP: #1419838
  * net: Fix stacked vlan offload features computation
    - LP: #1419838
  * net: Reset secmark when scrubbing packet
    - LP: #1419838
  * tcp: Do not apply TSO segment limit to non-TSO packets
    - LP: #1419838
  * alx: fix alx_poll()
    - LP: #1419838
  * team: avoid possible underflow of count_pending value for notify_peers
    and mcast_rejoin
    - LP: #1419838
  * enic: fix rx skb checksum
    - LP: #1419838
  * net/core: Handle csum for CHECKSUM_COMPLETE VXLAN forwarding
    - LP: #1419838
  * macvlan: unregister net device when netdev_upper_dev_link() fails
    - LP: #1419838
  * netfilter: conntrack: disable generic tracking for known protocols
    - LP: #1419838
  * xen-netfront: Fix handling packets on compound pages with skb_linearize
    - LP: #1317811, #1419838
  * xen-netfront: use correct linear area after linearizing an skb
    - LP: #1317811, #1419838
  * eCryptfs: Force RO mount when encrypted view is enabled
    - LP: #1419838
  * smiapp: Take mutex during PLL update in sensor initialisation
    - LP: #1419838
  * smiapp-pll: Correct clock debug prints
    - LP: #1419838
  * sound: simplify au0828 quirk table
    - LP: #1419838
  * sound: Update au0828 quirks table
    - LP: #1419838
  * af9005: fix kernel panic on init if compiled without IR
    - LP: #1419838
  * writeback: fix a subtle race condition in I_DIRTY clearing
    - LP: #1419838
  * usb: renesas_usbhs: gadget: fix NULL pointer dereference in
    ep_disable()
    - LP: #1419838
  * KVM: s390: flush CPU on load control
    - LP: #1419838
  * UBI: Fix double free after do_sync_erase()
    - LP: #1419838
  * UBI: Fix invalid vfree()
    - LP: #1419838
  * Drivers: hv: vmbus: Fix a race condition when unregistering a device
    - LP: #1419838
  * driver core: Fix unbalanced device reference in drivers_probe
    - LP: #1419838
  * PCI: Restore detection of read-only BARs
    - LP: #1419838
  * scsi: correct return values for .eh_abort_handler implementations
    - LP: #1419838
  * drm/radeon: fix typo in CI dpm disable
    - LP: #1419838
  * ARM: tegra: Re-add removed SoC id macro to tegra_resume()
    - LP: #1419838
  * arm64: Add COMPAT_HWCAP_LPAE
    - LP: #1419838
  * genhd: check for int overflow in disk_expand_part_tbl()
    - LP: #1419838
  * ftrace/x86: Add frames pointers to trampoline as necessary
    - LP: #1419838
  * drm/ttm: Avoid memory allocation from shrinker functions.
    - LP: #1419838
  * ASoC: sigmadsp: Refuse to load firmware files with a non-supported
    version
    - LP: #1419838
  * drm/radeon: work around a hw bug in MGCG on CIK
    - LP: #1419838
  * Btrfs: make sure we wait on logged extents when fsycning two subvols
    - LP: #1419838
  * Btrfs: do not move em to modified list when unpinning
    - LP: #1419838
  * megaraid_sas: corrected return of wait_event from abort frame path
    - LP: #1419838
  * ASoC: max98090: Fix ill-defined sidetone route
    - LP: #1419838
  * blk-mq: use 'nr_cpu_ids' as highest CPU ID count for hwq <-> cpu map
    - LP: #1419838
  * nfs41: fix nfs4_proc_layoutget error handling
    - LP: #1419838
  * cdc-acm: memory leak in error case
    - LP: #1419838
  * USB: cdc-acm: check for valid interfaces
    - LP: #1419838
  * x86/asm/traps: Disable tracing and kprobes in fixup_bad_iret and
    sync_regs
    - LP: #1419838
  * uvcvideo: Fix destruction order in uvc_delete()
    - LP: #1419838
  * HID: i2c-hid: fix race condition reading reports
    - LP: #1419838
  * mfd: tc6393xb: Fail ohci suspend if full state restore is required
    - LP: #1419838
  * serial: samsung: wait for transfer completion before clock disable
    - LP: #1419838
  * mmc: dw_mmc: avoid write to CDTHRCTL on older versions
    - LP: #1419838
  * Bluetooth: ath3k: Add support of MCI 13d3:3408 bt device
    - LP: #1419838
  * eCryptfs: Remove buggy and unnecessary write in file name decode
    routine
    - LP: #1419838
  * n_tty: Fix read_buf race condition, increment read_head after pushing
    data
    - LP: #1419838
  * dm cache: only use overwrite optimisation for promotion when in
    writeback mode
    - LP: #1419838
  * dm cache: dirty flag was mistakenly being cleared when promoting via
    overwrite
    - LP: #1419838
  * dm bufio: fix memleak when using a dm_buffer's inline bio
    - LP: #1419838
  * ath9k_hw: fix hardware queue allocation
    - LP: #1419838
  * ath9k: fix BE/BK queue order
    - LP: #1419838
  * ath5k: fix hardware queue index assignment
    - LP: #1419838
  * tcm_loop: Fix wrong I_T nexus association
    - LP: #1419838
  * iwlwifi: dvm: fix flush support for old firmware
    - LP: #1419838
  * iommu/vt-d: Fix an off-by-one bug in __domain_mapping()
    - LP: #1419838
  * dm crypt: use memzero_explicit for on-stack buffer
    - LP: #1419838
  * mnt: Implicitly add MNT_NODEV on remount when it was implicitly added
    by mount
    - LP: #1419838
  * mnt: Update unprivileged remount test
    - LP: #1419838
  * umount: Disallow unprivileged mount force
    - LP: #1419838
  * md/raid56: Don't perform reads to support writes until stripe is ready.
    - LP: #1419838
  * md/raid5: avoid livelock caused by non-aligned writes.
    - LP: #1419838
  * md/raid5: fetch_block must fetch all the blocks handle_stripe_dirtying
    wants.
    - LP: #1419838
  * drm/i915: Disallow pin ioctl completely for kms drivers
    - LP: #1419838
  * drm/vmwgfx: Don't use memory accounting for kernel-side fence objects
    - LP: #1419838
  * drm/vmwgfx: Fix fence event code
    - LP: #1419838
  * hp_accel: Add support for HP ZBook 15
    - LP: #1419838
  * drm/radeon: check the right ring in radeon_evict_flags()
    - LP: #1419838
  * swiotlb-xen: pass dev_addr to xen_dma_unmap_page and
    xen_dma_sync_single_for_cpu
    - LP: #1419838
  * swiotlb-xen: call xen_dma_sync_single_for_device when appropriate
    - LP: #1419838
  * clocksource: arch_timer: Fix code to use physical timers when requested
    - LP: #1419838
  * ALSA: hda - Fix built-in mic at resume on Lenovo Ideapad S210
    - LP: #1419838
  * can: peak_usb: fix memset() usage
    - LP: #1419838
  * can: peak_usb: fix cleanup sequence order in case of error during init
    - LP: #1419838
  * ALSA: usb-audio: Don't resubmit pending URBs at MIDI error recovery
    - LP: #1419838
  * KEYS: Fix stale key registration at error path
    - LP: #1419838
  * thermal: Fix error path in thermal_init()
    - LP: #1419838
  * blk-mq: Fix a use-after-free
    - LP: #1419838
  * fs: nfsd: Fix signedness bug in compare_blob
    - LP: #1419838
  * nfsd4: fix xdr4 inclusion of escaped char
    - LP: #1419838
  * userns: Rename id_map_mutex to userns_state_mutex
    - LP: #1419838
  * drm/i915: Don't complain about stolen conflicts on gen3
    - LP: #1419838
  * ALSA: hda - Add EAPD fixup for ASUS Z99He laptop
    - LP: #1419838
  * Btrfs: fix fs corruption on transaction abort if device supports
    discard
    - LP: #1419838
  * ncpfs: return proper error from NCP_IOC_SETROOT ioctl
    - LP: #1419838
  * drivers/rtc/rtc-sirfsoc.c: move hardware initilization earlier in probe
    - LP: #1419838
  * rtc: omap: fix missing wakealarm attribute
    - LP: #1419838
  * exit: pidns: alloc_pid() leaks pid_namespace if child_reaper is exiting
    - LP: #1419838
  * perf/x86/intel/uncore: Make sure only uncore events are collected
    - LP: #1419838
  * perf: Fix events installation during moving group
    - LP: #1419838
  * KVM: nVMX: Disable unrestricted mode if ept=0
    - LP: #1419838
  * drm/i915: save/restore GMBUS freq across suspend/resume on gen4
    - LP: #1419838
  * pstore-ram: Fix hangs by using write-combine mappings
    - LP: #1419838
  * pstore-ram: Allow optional mapping with pgprot_noncached
    - LP: #1419838
  * userns: Add a knob to disable setgroups on a per user namespace basis
    - LP: #1419838
  * userns: Allow setting gid_maps without privilege when setgroups is
    disabled
    - LP: #1419838
  * userns: Unbreak the unprivileged remount tests
    - LP: #1419838
  * HID: i2c-hid: prevent buffer overflow in early IRQ
    - LP: #1419838
  * mac80211: fix multicast LED blinking and counter
    - LP: #1419838
  * cfg80211: avoid mem leak on driver hint set
    - LP: #1419838
  * mtd: tests: abort torturetest on erase errors
    - LP: #1419838
  * tracing/sched: Check preempt_count() for current when reading
    task->state
    - LP: #1419838
  * iscsi,iser-target: Initiate termination only once
    - LP: #1419838
  * iser-target: Fix flush + disconnect completion handling
    - LP: #1419838
  * iser-target: Parallelize CM connection establishment
    - LP: #1419838
  * iser-target: Fix connected_handler + teardown flow race
    - LP: #1419838
  * iser-target: Handle ADDR_CHANGE event for listener cm_id
    - LP: #1419838
  * iser-target: Fix implicit termination of connections
    - LP: #1419838
  * genirq: Prevent proc race against freeing of irq descriptors
    - LP: #1419838
  * x86/tls: Disallow unusual TLS segments
    - LP: #1419838
  * powerpc/powernv: Switch off MMU before entering nap/sleep/rvwinkle mode
    - LP: #1419838
  * ARC: [nsimosci] move peripherals to match model to FPGA
    - LP: #1419838
  * scsi: blacklist RSOC for Microsoft iSCSI target devices
    - LP: #1419838
  * rtlwifi: rtl8192ce: Set fw_ready flag
    - LP: #1419838
  * iscsi-target: Fail connection on short sendmsg writes
    - LP: #1419838
  * mac80211: free management frame keys when removing station
    - LP: #1419838
  * ceph: do_sync is never initialized
    - LP: #1419838
  * x86/tls: Don't validate lm in set_thread_area() after all
    - LP: #1419838
  * ALSA: usb-audio: extend KEF X300A FU 10 tweak to Arcam rPAC
    - LP: #1419838
  * mnt: Fix a memory stomp in umount
    - LP: #1419838
  * ocfs2: fix journal commit deadlock
    - LP: #1419838
  * tick/powerclamp: Remove tick_nohz_idle abuse
    - LP: #1419838
  * Linux 3.13.11-ckt15
    - LP: #1419838

  [ Xiong Zhang ]

  * SAUCE: ubuntu/i915: power on sink if dpcd read fail
    - LP: #1416451
 -- Seth Forshee <seth.forshee@xxxxxxxxxxxxx>   Mon, 09 Feb 2015 14:08:50 -0600

** Changed in: linux (Ubuntu Trusty)
       Status: Fix Committed => Fix Released

** CVE added: http://www.cve.mitre.org/cgi-
bin/cvename.cgi?name=2015-0239

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https://bugs.launchpad.net/bugs/1416451

Title:
  Can't switch display mode more than one cycle when docked

Status in linux package in Ubuntu:
  Fix Committed
Status in linux source package in Trusty:
  Fix Released

Bug description:
  [Impact]
  We have a system under certification that needs a workaround in the kernel for now. The bug is that if the machine is booted attached to a dock with a monitor connected to it's VGA output,  the connection to the monitor is dropped after one full cycle of display modes with the hotkey combo. This is a firmware bug and will eventually be fixed by the BIOS vendor, but in the meantime we need a workaround in the kernel.

  The dock has a builtin DP-VGA dongle which is the culprit here.

  [Test Case]
  attach the unit to a doc with a monitor plugged to a VGA port, switch display modes with hotkey combo, should be able to do more than one cycle with the combo

  [Regression Potential] 
  We got the patch from Intel, with this disclaimer:
  "The workaround in comment 41# maybe has side effect on DP port which doesn't connect DP screen. On these DP ports, this workaround will add an extra power on and power off command . So this workaround couldn't push to upstream."

  so there shouldn't be any visible regressions..

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References

[Bug 1416451] [NEW] Can't switch display mode more than one cycle when docked
From: Timo Aaltonen, 2015-01-30