[Bug 111495] New: Black Screen on Ubuntu 18.04 + Intel Graphics with Kernel > 4.15.0-47

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=111495

            Bug ID: 111495
           Summary: Black Screen on Ubuntu 18.04 + Intel Graphics with
                    Kernel > 4.15.0-47
           Product: DRI
           Version: XOrg git
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: not set
          Priority: not set
         Component: DRM/Intel
          Assignee: intel-gfx-bugs at lists.freedesktop.org
          Reporter: zowalla at colorful-bytes.com
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
                CC: intel-gfx-bugs at lists.freedesktop.org

Created attachment 145174
  --> https://bugs.freedesktop.org/attachment.cgi?id=145174&action=edit
dmesg output for v5.3-rc6 mainline kernel

Hi,

we've been running 18.04 (w/ Xubuntu) + 4.15.0-47 kernel for a while now (on
Minix Z83-4 devices w/ Intel X5-Z8350 CPUs), which is working fine. I had
opened an issue at Ubuntu, but was told to report this upstream (reference:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1840889)

After upgrading the kernel to a newer version (> 4.15.0-47), HDMI output is not
available anymore, i915 reports an invalid EDID version via dmesg I dropped the
full dmesg output on Pastebin: https://pastebin.com/jXTqAzkQ (with
4.15.0-58-generic). Attachment contains dmesg output of mainline kernel
v5.3-rc6

As a start I'm blaming the Linux kernel / i915 since booting 4.15.0-47 kernel
works just fine.

Known faulty kernel versions are:

- Ubuntu Kernel: 4.15.0-58-generic
- Ubuntu Kernel: 4.15.0-59-generic
- Ubuntu Kernel: 5.0.0-25-generic
- Mainline Kernel: v5.3-rc6

Not sure how to best collect logs and system information for you since I'm not
used to debugging black screens. However, SSH access is possible. I am happy to
provide more information, if needed. We can also install and test experimental
kernel versions.

Note: This happens then attached via a standard HDMI cable as well as with a
HDMI-DVI cable on different monitor setups.

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