Public bug reported:

At booting up:

mtk_t7xx 0000:56:00.0: enabling device (0000 -> 0002)
mtk_t7xx 0000:56:00.0: Invalid device status 0x1
mtk_t7xx 0000:56:00.0: Port AT is not opened, drop packets
mtk_t7xx 0000:56:00.0: Packet drop on channel 0x1004, port not found

And at suspending:

mtk_t7xx 0000:56:00.0: Not ready for system sleep
mtk_t7xx 0000:56:00.0: PM: device_prepare(): pci_pm_prepare+0x0/0x80 returns 
-110
mtk_t7xx 0000:56:00.0: PM: not prepared for power transition: code -110
PM: Some devices failed to suspend, or early wake event detected

** Affects: hwe-next
     Importance: Undecided
         Status: New

** Affects: linux (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: oem-priority originate-from-2048144 stella

** Tags added: oem-priority originate-from-2048144 stella

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https://bugs.launchpad.net/bugs/2049358

Title:
  mtk_t7xx WWAN module fails to probe with: Invalid device status 0x1

Status in HWE Next:
  New
Status in linux package in Ubuntu:
  New

Bug description:
  At booting up:

  mtk_t7xx 0000:56:00.0: enabling device (0000 -> 0002)
  mtk_t7xx 0000:56:00.0: Invalid device status 0x1
  mtk_t7xx 0000:56:00.0: Port AT is not opened, drop packets
  mtk_t7xx 0000:56:00.0: Packet drop on channel 0x1004, port not found

  And at suspending:

  mtk_t7xx 0000:56:00.0: Not ready for system sleep
  mtk_t7xx 0000:56:00.0: PM: device_prepare(): pci_pm_prepare+0x0/0x80 returns 
-110
  mtk_t7xx 0000:56:00.0: PM: not prepared for power transition: code -110
  PM: Some devices failed to suspend, or early wake event detected

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