Radeon HD 7570M: drm: deep frustration with r339186

On 23/09/2018 08:09, Graham Perrin wrote:

> Re: Suspend, resume, UEFI, CSM, drm-stable-kmod and drm-next-kmod with Radeon HD 7570M

> … better without drm-next-kmod; and (as expected, given the package message) drm-stable-kmod has known problems with UEFI.

Now (with r339186) it seems that drm-next-kmod is the only usable option.

However, I'm sorry to say:

- it does feel regressive, compared to working without drm-next-kmod with earlier versions of -CURRENT.

I can no longer find a way to reliably suspend (sleep) the notebook.

At the time of writing my part-working configuration is as outlined below.

However – frustratingly – for a while, an hour or so ago, it seemed as if the same configuration was useless; after a point, the screen would go blank (grey) and things would progress no further e.g. no login manager (sddm); no response to Control-Alt-F2; no response to Control-Alt-Delete. The apparent unpredictability leading to a dead-end situation has created a sense of unease; now I'm genuinely afraid to test suspend :-(


For reference
– working at the moment with UEFI, without CSM
==============================================

$ date ; uname -v
Sat  6 Oct 2018 01:51:53 BST
FreeBSD 12.0-ALPHA8 r339186 GENERIC-NODEBUG
$ grep hw.acpi.reset /boot/loader.conf
# hw.acpi.reset_video=1
$ grep debug.acpi /boot/loader.conf
debug.acpi.resume_beep=1
$ grep adeon /etc/rc.conf
kld_list="/boot/modules/radeonkms.ko"
$ pciconf -lv | grep -C 2 adeon
vgapci0_at_pci0:1:0:0:     class=0x030000 card=0x17a9103c chip=0x68411002 rev=0x00 hdr=0x00
    vendor     = 'Advanced Micro Devices, Inc. [AMD/ATI]'
    device     = 'Thames [Radeon HD 7550M/7570M/7650M]'
    class      = display
    subclass   = VGA
hdac0_at_pci0:1:0:1:       class=0x040300 card=0x17a9103c chip=0xaa901002 rev=0x00 hdr=0x00
    vendor     = 'Advanced Micro Devices, Inc. [AMD/ATI]'
    device     = 'Turks HDMI Audio [Radeon HD 6500/6600 / 6700M Series]'
    class      = multimedia
    subclass   = HDA
$ pkg info drm-next-kmod | grep Version
Version        : 4.11.g20180822
$ pkg info drm-kmod | grep Version
Version        : g20180930
$