Re: drm-current-kmod-4.16.g20190424 hangs
Tycho Nightingale <[email protected]>
| Newsgroups | gmane.os.freebsd.devel.x11 |
|---|---|
| Message-ID | <[email protected]> |
Hi, > On Apr 26, 2019, at 4:39 PM, Andrey Fesenko <[email protected]> wrote: > > On Fri, Apr 26, 2019 at 6:23 PM Johannes Lundberg <[email protected]> wrote: >> >> From https://reviews.freebsd.org/D19845 Can you try the sysctls >> suggested there? >> > > hw.busdma.default="bounce" and hw.dmar.enable="0" ? both not exist > > attach debug dmesg > <dmesg.boot> What are your BIOS settings for VT-d? I see an ACPI DMAR table being reported. As kib@ noted in https://reviews.freebsd.org/D19845: it’s not to be a surprise that "Intel GPU does not work with the DMAR enabled”. As a first step please make sure that VT-d is disabled. Then proceed to enabling it in identity mapped mode and finally in re-mapped mode. That should give some additional insight into the culprit e.g. the device not being IOMMU compatible or the driver not being IOMMU compatible or something else entirely. Tycho _______________________________________________ [email protected] mailing list https://lists.freebsd.org/mailman/listinfo/freebsd-x11 To unsubscribe, send any mail to "[email protected]"