| Message ID | 1726176470-13133-1-git-send-email-ernis@linux.microsoft.com |
|---|---|
| Headers | show |
| Series | Disable Suspend-to-Idle in Hyper-V and Fix Hibernation Interruptions | expand |
Hi Vennela, [+linux-pm, Rafael, Pavel, Len] Let's CC the linux-pm mailing list for discussions related to power management features (such as suspend/resume and hibernation). On Thu, Sep 12, 2024 at 02:27:47PM -0700, Erni Sri Satya Vennela wrote: > It has been reported that Hyper-V VM users can unintentionally abort > hibernation by mouse or keyboard movements. To address this issue, > we have decided to remove the wakeup events for the Hyper-V keyboard > and mouse driver.
It has been reported that Hyper-V VM users can unintentionally abort hibernation by mouse or keyboard movements. To address this issue, we have decided to remove the wakeup events for the Hyper-V keyboard and mouse driver. However, this change introduces another problem: Suspend-to-Idle brings the system down with no method to wake it back up. Given that there are no real users of Suspend-to-Idle in Hyper-V, we have decided to disable this feature for VMBus. This results in: $echo freeze > /sys/power/state > bash: echo: write error: Operation not supported The keyboard and mouse were previously registered as wakeup sources to interrupt the freeze operation in a VM. Since the freeze operation itself is no longer supported, we are disabling them as wakeup events. This patchset ensures that the system remains stable and prevents unintended interruptions during hibernation. Erni Sri Satya Vennela (3): Drivers: hv: vmbus: Disable Suspend-to-Idle for VMBus Revert "Input: hyperv-keyboard - register as a wakeup source" Revert "HID: hyperv: register as a wakeup source" drivers/hid/hid-hyperv.c | 6 ------ drivers/hv/vmbus_drv.c | 15 ++++++++++++++- drivers/input/serio/hyperv-keyboard.c | 12 ------------ 3 files changed, 14 insertions(+), 19 deletions(-)