Radeon hybrid graphics problem on resume

[Kamal Mostafa]

From mainline commit 256faed: Revert "drm/radeon: call hpd_irq_event on resume"
(Ubuntu kernels T, U, V, W, and X carry the patch to be reverted).

-----

commit 256faedcfd646161477d47a1a78c32a562d2e845
Author: Linus Torvalds <email address hidden>
Date: Mon Mar 7 13:15:09 2016 -0800

    Revert "drm/radeon: call hpd_irq_event on resume"

    This reverts commit dbb17a21c131eca94eb31136eee9a7fe5aff00d9.

    It turns out that commit can cause problems for systems with multiple
    GPUs, and causes X to hang on at least a HP Pavilion dv7 with hybrid
    graphics.

    This got noticed originally in 4.4.4, where this patch had already
    gotten back-ported, but 4.5-rc7 was verified to have the same problem.

    Alexander Deucher says:
     "It looks like you have a muxed system so I suspect what's happening is
      that one of the display is being reported as connected for both the
      IGP and the dGPU and then the desktop environment gets confused or
      there some sort problem in the detect functions since the mux is not
      switched to the dGPU. I don't see an easy fix unless Dave has any
      ideas. I'd say just revert for now"

    Reported-by: Jörg-Volker Peetz <email address hidden>
    Acked-by: Alexander Deucher <email address hidden>
    Cc: Dave Airlie <email address hidden>
    Cc: <email address hidden> # wherever dbb17a21c131 got back-ported
    Signed-off-by: Linus Torvalds <email address hidden>

[Launchpad Janitor (janitor)]

This bug was fixed in the package linux - 4.4.0-12.28

---------------
linux (4.4.0-12.28) xenial; urgency=low

  * Miscellaneous Ubuntu changes
    - reconstruct: Work around orig tarball packaging limitiations
      Fixes FTBS

 -- Tim Gardner <email address hidden> Tue, 08 Mar 2016 13:26:08 -0700

[Launchpad Janitor (janitor)]

This bug was fixed in the package linux - 4.2.0-34.39

---------------
linux (4.2.0-34.39) wily; urgency=low

  [ Brad Figg ]

  * Release Tracking Bug
    - LP: #1555821

  [ Florian Westphal ]

  * SAUCE: [nf] netfilter: x_tables: check for size overflow
    - LP: #1555353
  * SAUCE: [nf,v2] netfilter: x_tables: don't rely on well-behaving
    userspace
    - LP: #1555338

linux (4.2.0-33.38) wily; urgency=low

  [ Brad Figg ]

  * Release Tracking Bug
    - LP: #1554649

  [ Upstream Kernel Changes ]

  * Revert "drm/radeon: call hpd_irq_event on resume"
    - LP: #1554608
  * cxl: Fix PSL timebase synchronization detection
    - LP: #1532914

linux (4.2.0-32.37) wily; urgency=low

  [ Kamal Mostafa ]

  * Release Tracking Bug
    - LP: #1550045

  [ Kamal Mostafa ]

  * Merged back Ubuntu-4.2.0-31.36

linux (4.2.0-31.36) wily; urgency=low

  [ Brad Figg ]

  * Release Tracking Bug
    - LP: #1548579

  [ Andy Whitcroft ]

  * [Debian] hv: hv_set_ifconfig -- convert to python3
    - LP: #1506521
  * [Debian] hv: hv_set_ifconfig -- switch to approved indentation
    - LP: #1540586
  * [Debian] hv: hv_set_ifconfig -- fix numerous parameter handling issues
    - LP: #1540586

  [ Carol L Soto ]

  * SAUCE: IB/IPoIB: Do not set skb truesize since using one linearskb
    - LP: #1541326

  [ Dan Streetman ]

  * SAUCE: nbd: ratelimit error msgs after socket close
    - LP: #1505564

  [ Tim Gardner ]

  * Revert "SAUCE: (noup) cxlflash: Fix to avoid virtual LUN failover
    failure"
    - LP: #1541635
  * Revert "SAUCE: (noup) cxlflash: Fix to escalate LINK_RESET also on port
    1"
    - LP: #1541635
  * [Config] ARMV8_DEPRECATED=y
    - LP: #1545542

  [ Upstream Kernel Changes ]

  * x86/xen/p2m: hint at the last populated P2M entry
    - LP: #1542941
  * mm: add dma_pool_zalloc() call to DMA API
    - LP: #1543737
  * sctp: Prevent soft lockup when sctp_accept() is called during a timeout
    event
    - LP: #1543737
  * xen-netback: respect user provided max_queues
    - LP: #1543737
  * xen-netfront: respect user provided max_queues
    - LP: #1543737
  * xen-netfront: update num_queues to real created
    - LP: #1543737
  * iio: adis_buffer: Fix out-of-bounds memory access
    - LP: #1543737
  * KVM: PPC: Fix emulation of H_SET_DABR/X on POWER8
    - LP: #1543737
  * KVM: PPC: Fix ONE_REG AltiVec support
    - LP: #1543737
  * x86/irq: Call chip->irq_set_affinity in proper context
    - LP: #1543737
  * drm/amdgpu: fix tonga smu resume
    - LP: #1543737
  * perf kvm record/report: 'unprocessable sample' error while
    recording/reporting guest data
    - LP: #1543737
  * hrtimer: Handle remaining time proper for TIME_LOW_RES
    - LP: #1543737
  * timerfd: Handle relative timers with CONFIG_TIME_LOW_RES proper
    - LP: #1543737
  * posix-timers: Handle relative timers with CONFIG_TIME_LOW_RES proper
    - LP: #1543737
  * itimers: Handle relative timers with CONFIG_TIME_LOW_RES proper
    - LP: #1543737
  * drm/amdgpu: Use drm_calloc_large for VM page_tables array
    - LP: #1543737
  * drm/amdgpu: fix amdgpu_bo_pin_restricted VRAM placing v2
    - LP: #1543737
  * drm/radeon: properly byte swap vce firmware setup
    - LP: #1543737
  ...

[Launchpad Janitor (janitor)]

This bug was fixed in the package linux - 3.19.0-56.62

---------------
linux (3.19.0-56.62) vivid; urgency=low

  [ Brad Figg ]

  * Release Tracking Bug
    - LP: #1555832

  [ Florian Westphal ]

  * SAUCE: [nf,v2] netfilter: x_tables: don't rely on well-behaving
    userspace
    - LP: #1555338

linux (3.19.0-55.61) vivid; urgency=low

  [ Brad Figg ]

  * Release Tracking Bug
    - LP: #1554708

  [ Upstream Kernel Changes ]

  * Revert "drm/radeon: call hpd_irq_event on resume"
    - LP: #1554608

linux (3.19.0-54.60) vivid; urgency=low

  [ Luis Henriques ]

  * Release Tracking Bug
    - LP: #1552337

  [ Upstream Kernel Changes ]

  * Revert "firmware: dmi_scan: Fix UUID endianness for SMBIOS >= 2.6"
    - LP: #1551419

linux (3.19.0-53.59) vivid; urgency=low

  [ Kamal Mostafa ]

  * Release Tracking Bug
    - LP: #1550576

  [ Kamal Mostafa ]

  * Merged back 3.19.0-52.58

linux (3.19.0-52.58) vivid; urgency=low

  [ Brad Figg ]

  * Release Tracking Bug
    - LP: #1548548

  [ Dan Streetman ]

  * SAUCE: nbd: ratelimit error msgs after socket close
    - LP: #1505564

  [ Upstream Kernel Changes ]

  * Revert "ACPI / LPSS: allow to use specific PM domain during ->probe()"
    - LP: #1542457
  * Revert "workqueue: make sure delayed work run in local cpu"
    - LP: #1546320
  * net: ipmr: fix static mfc/dev leaks on table destruction
    - LP: #1542457
  * drm/nouveau/nv46: Change mc subdev oclass from nv44 to nv4c
    - LP: #1542457
  * ovl: allow zero size xattr
    - LP: #1542457
  * ovl: use a minimal buffer in ovl_copy_xattr
    - LP: #1542457
  * [media] vb2: fix a regression in poll() behavior for output,streams
    - LP: #1542457
  * [media] gspca: ov534/topro: prevent a division by 0
    - LP: #1542457
  * [media] media: dvb-core: Don't force CAN_INVERSION_AUTO in oneshot mode
    - LP: #1542457
  * tools lib traceevent: Fix output of %llu for 64 bit values read on 32
    bit machines
    - LP: #1542457
  * KVM: x86: expose MSR_TSC_AUX to userspace
    - LP: #1542457
  * KVM: x86: correctly print #AC in traces
    - LP: #1542457
  * drm/radeon: call hpd_irq_event on resume
    - LP: #1542457
  * xhci: refuse loading if nousb is used
    - LP: #1542457
  * arm64: Clear out any singlestep state on a ptrace detach operation
    - LP: #1542457
  * time: Avoid signed overflow in timekeeping_get_ns()
    - LP: #1542457
  * ovl: root: copy attr
    - LP: #1542457
  * Bluetooth: Add support of Toshiba Broadcom based devices
    - LP: #1522949, #1542457
  * rtlwifi: fix memory leak for USB device
    - LP: #1542457
  * wlcore/wl12xx: spi: fix oops on firmware load
    - LP: #1542457
  * ovl: check dentry positiveness in ovl_cleanup_whiteouts()
    - LP: #1542457
  * EDAC, mc_sysfs: Fix freeing bus' name
    - LP: #1542457
  * EDAC: Robustify workqueues destruction
    - LP: #1542457
  * arm64: mm: ensure that the zero page is visible to the page table
    walker
    - LP: #1542457
  * powerpc: Make value-returning atomics fully ordered
    - LP: #1542457
  * powerpc: Make {cmp}xchg* and their atomic_ versions fully ordered
    - LP: #1542457
  * dm space map metadata: remove unused variable in brb_pop()
    - LP: #1542457
  * dm thi...

[Launchpad Janitor (janitor)]

This bug was fixed in the package linux - 3.13.0-83.127

---------------
linux (3.13.0-83.127) trusty; urgency=low

  [ Brad Figg ]

  * Release Tracking Bug
    - LP: #1555839

  [ Florian Westphal ]

  * SAUCE: [nf,v2] netfilter: x_tables: don't rely on well-behaving
    userspace
    - LP: #1555338

linux (3.13.0-82.126) trusty; urgency=low

  [ Brad Figg ]

  * Release Tracking Bug
    - LP: #1554732

  [ Upstream Kernel Changes ]

  * Revert "drm/radeon: call hpd_irq_event on resume"
    - LP: #1554608
  * net: generic dev_disable_lro() stacked device handling
    - LP: #1547680

linux (3.13.0-81.125) trusty; urgency=low

  [ Luis Henriques ]

  * Release Tracking Bug
    - LP: #1552316

  [ Upstream Kernel Changes ]

  * Revert "firmware: dmi_scan: Fix UUID endianness for SMBIOS >= 2.6"
    - LP: #1551419
  * bcache: Fix a lockdep splat in an error path
    - LP: #1551327

linux (3.13.0-80.124) trusty; urgency=low

  [ Brad Figg ]

  * Release Tracking Bug
    - LP: #1548519

  [ Andy Whitcroft ]

  * [Debian] hv: hv_set_ifconfig -- convert to python3
    - LP: #1506521
  * [Debian] hv: hv_set_ifconfig -- switch to approved indentation
    - LP: #1540586
  * [Debian] hv: hv_set_ifconfig -- fix numerous parameter handling issues
    - LP: #1540586

  [ Dan Streetman ]

  * SAUCE: nbd: ratelimit error msgs after socket close
    - LP: #1505564

  [ Upstream Kernel Changes ]

  * Revert "workqueue: make sure delayed work run in local cpu"
    - LP: #1546320
  * [media] gspca: ov534/topro: prevent a division by 0
    - LP: #1542497
  * [media] media: dvb-core: Don't force CAN_INVERSION_AUTO in oneshot mode
    - LP: #1542497
  * tools lib traceevent: Fix output of %llu for 64 bit values read on 32
    bit machines
    - LP: #1542497
  * KVM: x86: correctly print #AC in traces
    - LP: #1542497
  * drm/radeon: call hpd_irq_event on resume
    - LP: #1542497
  * xhci: refuse loading if nousb is used
    - LP: #1542497
  * arm64: Clear out any singlestep state on a ptrace detach operation
    - LP: #1542497
  * time: Avoid signed overflow in timekeeping_get_ns()
    - LP: #1542497
  * rtlwifi: fix memory leak for USB device
    - LP: #1542497
  * wlcore/wl12xx: spi: fix oops on firmware load
    - LP: #1542497
  * EDAC, mc_sysfs: Fix freeing bus' name
    - LP: #1542497
  * EDAC: Don't try to cancel workqueue when it's never setup
    - LP: #1542497
  * EDAC: Robustify workqueues destruction
    - LP: #1542497
  * powerpc: Make value-returning atomics fully ordered
    - LP: #1542497
  * powerpc: Make {cmp}xchg* and their atomic_ versions fully ordered
    - LP: #1542497
  * dm space map metadata: remove unused variable in brb_pop()
    - LP: #1542497
  * dm thin: fix race condition when destroying thin pool workqueue
    - LP: #1542497
  * futex: Drop refcount if requeue_pi() acquired the rtmutex
    - LP: #1542497
  * drm/radeon: clean up fujitsu quirks
    - LP: #1542497
  * mmc: sdio: Fix invalid vdd in voltage switch power cycle
    - LP: #1542497
  * mmc: sdhci: Fix sdhci_runtime_pm_bus_on/off()
    - LP: #1542497
  * udf: limit the maximum number of indirect extents in a row
    - LP: #1542497
  * nfs: Fix race in __update_open_stateid...

[Launchpad Janitor (janitor)]

This bug was fixed in the package linux-lts-utopic - 3.16.0-67.87~14.04.1

---------------
linux-lts-utopic (3.16.0-67.87~14.04.1) trusty; urgency=low

  [ Brad Figg ]

  * Release Tracking Bug
    - LP: #1555847

  [ Florian Westphal ]

  * SAUCE: [nf,v2] netfilter: x_tables: don't rely on well-behaving
    userspace
    - LP: #1555338

linux-lts-utopic (3.16.0-66.86~14.04.1) trusty; urgency=low

  [ Brad Figg ]

  * Release Tracking Bug
    - LP: #1555277

  [ Upstream Kernel Changes ]

  * Revert "drm/radeon: call hpd_irq_event on resume"
    - LP: #1554608

linux-lts-utopic (3.16.0-65.85~14.04.1) trusty; urgency=low

  [ Luis Henriques ]

  * Release Tracking Bug
    - LP: #1552352

  [ Upstream Kernel Changes ]

  * Revert "firmware: dmi_scan: Fix UUID endianness for SMBIOS >= 2.6"
    - LP: #1551419

linux-lts-utopic (3.16.0-64.84~14.04.1) trusty; urgency=low

  [ Kamal Mostafa ]

  * Release Tracking Bug
    - LP: #1550605

  [ Kamal Mostafa ]

  * Merged back 3.16.0-63.83~14.04.1

linux-lts-utopic (3.16.0-63.83~14.04.1) trusty; urgency=low

  [ Brad Figg ]

  * Release Tracking Bug
    - LP: #1548934

  [ Dan Streetman ]

  * SAUCE: nbd: ratelimit error msgs after socket close
    - LP: #1505564

  [ Upstream Kernel Changes ]

  * Revert "workqueue: make sure delayed work run in local cpu"
    - LP: #1546320
  * drm/nouveau/nv46: Change mc subdev oclass from nv44 to nv4c
    - LP: #1543126
  * veth: don’t modify ip_summed; doing so treats packets with bad
    checksums as good.
    - LP: #1543126
  * sctp: sctp should release assoc when sctp_make_abort_user return NULL
    in sctp_close
    - LP: #1543126
  * connector: bump skb->users before callback invocation
    - LP: #1543126
  * unix: properly account for FDs passed over unix sockets
    - LP: #1543126
  * bridge: Only call /sbin/bridge-stp for the initial network namespace
    - LP: #1543126
  * vxlan: fix test which detect duplicate vxlan iface
    - LP: #1543126
  * net: sctp: prevent writes to cookie_hmac_alg from accessing invalid
    memory
    - LP: #1543126
  * tcp_yeah: don't set ssthresh below 2
    - LP: #1543126
  * bonding: Prevent IPv6 link local address on enslaved devices
    - LP: #1543126
  * phonet: properly unshare skbs in phonet_rcv()
    - LP: #1543126
  * net: bpf: reject invalid shifts
    - LP: #1543126
  * ipv6: update skb->csum when CE mark is propagated
    - LP: #1543126
  * team: Replace rcu_read_lock with a mutex in team_vlan_rx_kill_vid
    - LP: #1543126
  * xen-netback: respect user provided max_queues
    - LP: #1543126
  * xen-netfront: respect user provided max_queues
    - LP: #1543126
  * xen-netfront: print correct number of queues
    - LP: #1543126
  * xen-netfront: update num_queues to real created
    - LP: #1543126
  * sctp: Prevent soft lockup when sctp_accept() is called during a timeout
    event
    - LP: #1543126
  * sctp: convert sack_needed and sack_generation to bits
    - LP: #1543126
  * sctp: start t5 timer only when peer rwnd is 0 and local state is
    SHUTDOWN_PENDING
    - LP: #1543126
  * nfs: Fix unused variable error
    - LP: #1543126
  * [media] gspca: ov534/topro: prevent a division by 0
    - LP: #1543126
  * [me...