[Bug 109250] New: GPU hangs on any action in the UI

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=109250

            Bug ID: 109250
           Summary: GPU hangs on any action in the UI
           Product: DRI
           Version: XOrg git
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: major
          Priority: medium
         Component: DRM/Intel
          Assignee: intel-gfx-bugs at lists.freedesktop.org
          Reporter: nikola at krzalic.com
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
                CC: intel-gfx-bugs at lists.freedesktop.org

Created attachment 143021
  --> https://bugs.freedesktop.org/attachment.cgi?id=143021&action=edit
dmesg error log with debugging enabled

System works fine until I log in via GDM and try to do anything in the desktop
environment. Then it freezes, it may seem to work after a few minutes but again
if I try to open anything it will stop working. Weird small rectangles may show
up on the screen. 

dmesg shows that GPU is hanging. 

It works fine without a UI, and also works fairly well in Windows.

Hardware: Thinkpad X1 Carbon 5th Gen

Distro: ArchLinux (build 01.01.2019) but same issue on other distros
(Ubuntu,Mate,CentOS,etc)

Kernel: 4.20.0, but same issue on any kernel since 4.14 (haven't tried the
older ones)


The only thing that makes it work, barely, is nomodeset. But that's not really
a solution.

The attached error log is from ArchLinux running kernel 4.20.0.

The GPU in question:

0:02.0 VGA compatible controller: Intel Corporation HD Graphics 620 (rev 02)
(prog-if 00 [VGA controller])
        Subsystem: Lenovo ThinkPad X1 Carbon 5th Gen
        Flags: bus master, fast devsel, latency 0, IRQ 11
        Memory at eb000000 (64-bit, non-prefetchable) [size=16M]
        Memory at 60000000 (64-bit, prefetchable) [size=256M]
        I/O ports at e000 [size=64]
        [virtual] Expansion ROM at 000c0000 [disabled] [size=128K]
        Capabilities: [40] Vendor Specific Information: Len=0c <?>
        Capabilities: [70] Express Root Complex Integrated Endpoint, MSI 00
        Capabilities: [ac] MSI: Enable- Count=1/1 Maskable- 64bit-
        Capabilities: [d0] Power Management version 2
        Capabilities: [100] Process Address Space ID (PASID)
        Capabilities: [200] Address Translation Service (ATS)
        Capabilities: [300] Page Request Interface (PRI)
        Kernel modules: i915


I've spent countless hours trying to figure out where the issue is and have
made zero progress. Would really appreciate some help on this as it renders my
laptop unusable.

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