[Bug 97875] New: LCD flickering on Acer Aspire V3-772G with kernel 4.7.3 (PSR enabled)

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=97875

            Bug ID: 97875
           Summary: LCD flickering on Acer Aspire V3-772G with kernel
                    4.7.3 (PSR enabled)
           Product: DRI
           Version: XOrg git
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: DRM/Intel
          Assignee: intel-gfx-bugs at lists.freedesktop.org
          Reporter: madebr at gmail.com
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
                CC: intel-gfx-bugs at lists.freedesktop.org

Created attachment 126666
  --> https://bugs.freedesktop.org/attachment.cgi?id=126666&action=edit
full dmesg output with the following extra options: i915.enable_psr=0x2
log_buf_len=10M drm.debug=0x1e

Hi,

Since the update from Fedora 22 to 24 and the associated upgrade of the kernel
to 4.6/4.7,
the screen of my Acer Aspire V3-772G (Intel i7-4702MQ, GTX760M) has started to
flicker.
The flickering starts immediately when the user login screen appears.

The flickering does happen occasionally when moving the mouse or when having
something visible on the screen that moves (e.g. a watch command that has its
output changed regularly or a youtube movie..).

The flickering does not occur when passing i915.enable_psr=0 to the kernel.

System: Acer Aspire V3-772G: i7-4702MQ, GTX760M (Optimus), no external display.

$ uname -m
x86_64
$ uname -r
4.7.3-200.fc24.x86_64
$ cat /etc/system-release
Fedora release 24 (Twenty Four)
# lspci -s 00:02.0 -v
00:02.0 VGA compatible controller: Intel Corporation 4th Gen Core Processor
Integrated Graphics Controller (rev 06) (prog-if 00 [VGA controller])
        Subsystem: Acer Incorporated [ALI] Device 0781
        Flags: bus master, fast devsel, latency 0, IRQ 31
        Memory at d3000000 (64-bit, non-prefetchable) [size=4M]
        Memory at c0000000 (64-bit, prefetchable) [size=256M]
        I/O ports at 5000 [size=64]
        [virtual] Expansion ROM at 000c0000 [disabled] [size=128K]
        Capabilities: [90] MSI: Enable+ Count=1/1 Maskable- 64bit-
        Capabilities: [d0] Power Management version 2
        Capabilities: [a4] PCI Advanced Features
        Kernel driver in use: i915
        Kernel modules: i915

Attached is a full dmesg output with the following extra options:
i915.enable_psr=0x2 log_buf_len=10M drm.debug=0x1e

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