Created attachment 1268211 [details] Output of dmesg showing the bug Description of problem: Machine is an Acer Aspire ZG5 with Fedora 25 i686 with latest updates as of 2017-04-01. This machine has its internal flat panel display, and also a VGA connector on the side (currently unused). On every single boot, the kernel logs a pair of WARN_ON backtraces and taints the kernel. Version-Release number of selected component (if applicable): kernel-PAE-4.10.6-200.fc25.i686 How reproducible: Always Steps to Reproduce: 1.Install Fedora 25 i686 on an Acer Aspire One ZG5 2. 3. Actual results: A pair of WARN_ON backtraces are logged on dmesg at the moment the kernel loads the intel KMS driver and switches to graphics mode. Expected results: No backtraces Additional info: This backtrace is tainting the kernel. Due to this, there is a later issue that ABRT refuses to report.
Created attachment 1268212 [details] Output of lspci -v
Still present in kernel-PAE-4.12.14-300.fc26.i686 under Fedora 26.
This same machine is now affected by a severe screen corruption when booting kernel-PAE-4.13.4-200.fc26.i686 as described in https://bugzilla.redhat.com/show_bug.cgi?id=1498725 .
I was asked to test: git://github.com/vsyrjala/linux.git plane_sanitation_2_v4.13 and I can confirm that the applied patches fix this bug (as well as #1498725).
Hi folks, It sounds like this patch fixes the issue. What is the status of it? Are we still waiting for it to show up in the mainline kernel? Any chance we could make a patched version of the kernel available for testing? (e.g. in a copr) It looks like there are a few other bugs related to this: * Bug 1507055 (https://bugzilla.redhat.com/show_bug.cgi?id=1507055) * Bug 1498275 (https://bugzilla.redhat.com/show_bug.cgi?id=1498725) Thanks!
Gah! that is bug 1498725. And pardon my lack of experience with BZ.. :)
With kernel 4.15.3-300.fc27.i686 this bug has been fixed. Thanks!