Re: funny thing with the drm0

From: Vanbreukelingen Ltd. <lizbethmutterhunt_at_gmail.com>
Date: Thu, 20 Aug 2020 16:58:25 +0200
On 2020-08-20 16:43, Andreas Nilsson wrote:
>
>
> On Thu, Aug 20, 2020 at 2:48 PM Vanbreukelingen Ltd. 
> <lizbethmutterhunt_at_gmail.com <mailto:lizbethmutterhunt_at_gmail.com>> wrote:
>
>     On Wednesday, August 19, 2020 9:43:21 AM CEST you wrote:
>     > On Wed, Aug 19, 2020 at 3:22 AM Lizbeth Mutterhunt, Ph.D <
>     >
>     > lizbethmutterhunt_at_gmail.com
>     <mailto:lizbethmutterhunt_at_gmail.com>> wrote:
>     > > After having had some near-death-experiences in Greece I'm
>     back to my
>     > > screens. As horizon arises, BSD gets up --- and if it is 3
>     a.m.! :-)
>     > >
>     > >
>     > > But this is the experience with my Dell Vostro on 13 current:
>     > >
>     > >
>     > > After finally recompiling the kernel with the drm-module
>     inside and
>     > > the trick of injecting the
>     >
>     > This is not the way to do it. Modern hardware require drm-kmod
>     from ports,
>     > or if you want the latest drm-devel-kmod. Then add
>     /boot/modules/drm.ko
>     > and /boot/modules/i915kms.ko to kld_list in /etc/rc.conf
>     wasn't yet finished (c [see] beyond), but I guess I have to
>     disable the whole
>     output with something like hw.*=1 or so. is it possible to make a
>     bootlogo
>     while VEBOSE output = 2 just for the reason some kids try to play
>     with it. 
>
tried it now: next kernel panic on lightdm and sddm makes a mouse in 
mouse pointer over a blank screen. the driver is initialised but hungs 
up like this:

Dump header from device: /dev/ada0p4
   Architecture: i386
   Architecture Version: 4
   Dump Length: 97792
   Blocksize: 512
   Compression: none
   Dumptime: 2020-08-20 16:41:45 +0200
   Hostname: current
   Magic: FreeBSD Text Dump
   Version String: FreeBSD 13.0-CURRENT #3 r364372: Wed Aug 19 07:54:57 
CEST 2020
     root_at_current:/usr/obj/usr/src/i386.i386/sys/MIRANDA
*Panic String: vm_page_assert_xbusied: page 0x6f47814 not exclusive busy 
_at_ /usr/src/sys/vm/vm_page.c:1609**
**  Dump Parity: 4227235352*
   Bounds: 2
   Dump Status: good


>
>     > > device IWNFW
>     doesn't install the 6000, btw --- probably can't find FW on device
>     HAL. 
>
>
>     > Again, this is not needed, firmware is autoloaded on module
>     load. Just add
>     > if_iwn to kld_list in /etc/rc.conf
>
>
> Here I admit I was wrong, iwn handles it differently than iwm. The man 
> page lists 3 different firmware versions for the 6000 series, which 
> can be loaded from loader.conf
When compiling DEVICE iwnfb into kern: mine (iwn6000g2bfw) doesn't load 
probably at bootup but with wpa_supplicant -d BSD -i wlan0 -c 
/etc/wpa_supplicant.conf it loads correctly and automatically assigns an 
IP.


>     built 15 hours of NanoBSD while finishing the nightly built
>     someone was on
>     Ctrl-C. So _i.w (installworld) is 5MB "thick" and doesn't boot at
>     all but some
>     reason tells me behind this system in system is something to beat
>     beastie in
>     killing KFC forks.
>
>
>     > > I get a *nice* message a bootup:
>     > >
>     > > Aug 19 02:51:10 current kernel: info: [drm] Initialized drm
>     1.1.0 20060810
>     > > Aug 19 02:51:10 current kernel: drmn0: <Intel SandyBridge (M)>
>     on vgapci0
>     > > Aug 19 02:51:10 current kernel: info: [drm] Memory usable by
>     graphics
>     > > device = 2048M
>     > > Aug 19 02:51:10 current kernel: info: [drm] MTRR allocation
>     failed.
>     > > Graphics performance may suffer.
>     > > Aug 19 02:51:10 current kernel: intel_iicbb0 on drmn0
>     > > Aug 19 02:51:10 current kernel: iicbus0: <Philips I2C bus> on
>     > > iicbb_nostop0 addr 0x1
>     > > Aug 19 02:51:10 current kernel: iic0: <I2C generic I/O> on iicbus0
>     > > Aug 19 02:51:10 current kernel: iicbus1: <Philips I2C bus> on
>     intel_gmbus0
>     > > Aug 19 02:51:10 current kernel: iic1: <I2C generic I/O> on iicbus1
>     > > Aug 19 02:51:10 current kernel: intel_iicbb1 on drmn0
>     > > Aug 19 02:51:10 current kernel: iicbus2: <Philips I2C bus> on
>     > > iicbb_nostop1 addr 0x12
>     > > Aug 19 02:51:10 current kernel: iic2: <I2C generic I/O> on iicbus2
>     > > Aug 19 02:51:10 current kernel: iicbus3: <Philips I2C bus> on
>     intel_gmbus1
>     > > Aug 19 02:51:10 current kernel: iic3: <I2C generic I/O> on iicbus3
>     > > Aug 19 02:51:10 current kernel: intel_iicbb2 on drmn0
>     > > Aug 19 02:51:10 current kernel: iicbus4: <Philips I2C bus> on
>     > > iicbb_nostop2 addr 0x12
>     > > Aug 19 02:51:10 current kernel: iic4: <I2C generic I/O> on iicbus4
>     > > Aug 19 02:51:10 current kernel: iicbus5: <Philips I2C bus> on
>     intel_gmbus2
>     > > Aug 19 02:51:10 current kernel: iic5: <I2C generic I/O> on iicbus5
>     > > Aug 19 02:51:10 current kernel: intel_iicbb3 on drmn0
>     > > Aug 19 02:51:10 current kernel: iicbus6: <Philips I2C bus> on
>     > > iicbb_nostop3 addr 0x12
>     > > Aug 19 02:51:10 current kernel: iic6: <I2C generic I/O> on iicbus6
>     > > Aug 19 02:51:10 current kernel: iicbus7: <Philips I2C bus> on
>     intel_gmbus3
>     > > Aug 19 02:51:10 current kernel: iic7: <I2C generic I/O> on iicbus7
>     > > Aug 19 02:51:10 current kernel: intel_iicbb4 on drmn0
>     > > Aug 19 02:51:10 current kernel: iicbus8: <Philips I2C bus> on
>     > > iicbb_nostop4 addr 0x12
>     > > Aug 19 02:51:10 current kernel: iic8: <I2C generic I/O> on iicbus8
>     > > Aug 19 02:51:10 current kernel: iicbus9: <Philips I2C bus> on
>     intel_gmbus4
>     > > Aug 19 02:51:10 current kernel: iic9: <I2C generic I/O> on iicbus9
>     > > Aug 19 02:51:10 current kernel: intel_iicbb5 on drmn0
>     > > Aug 19 02:51:10 current kernel: iicbus10: <Philips I2C bus> on
>     > > iicbb_nostop5 addr 0x12
>     > >
>     > > And furthermore:
>     > >
>     > > Aug 19 02:51:10 current kernel: info: [drm] MSI enabled 1
>     message(s)
>     > > Aug 19 02:51:10 current kernel: info: [drm] Supports vblank
>     timestamp
>     > > caching Rev 1 (10.10.201>
>     > > Aug 19 02:51:10 current kernel: info: [drm] Driver supports
>     precise
>     > > vblank timestamp query.
>     > > Aug 19 02:51:10 current kernel: intel_sdvo_ddc_proxy921920 on
>     drmn0
>     > > Aug 19 02:51:10 current kernel: intel_sdvo_ddc_proxy921920:
>     detached
>     > > Aug 19 02:51:10 current kernel: drm_iic_dp_aux0 on drmn0
>     > > Aug 19 02:51:10 current kernel: drmn0: taking over the fictitious
>     > > range 0xe0000000-0xf0000000
>     > > Aug 19 02:51:10 current kernel: info: [drm] Connector LVDS-1:
>     get mode
>     > > from tunables:
>     > > Aug 19 02:51:10 current kernel: info: [drm]   -
>     kern.vt.fb.modes.LVDS-1
>     > > Aug 19 02:51:10 current kernel: info: [drm]   -
>     kern.vt.fb.default_mode
>     > > Aug 19 02:51:10 current kernel: info: [drm] Connector VGA-1:
>     get mode
>     > > from tunables:
>     > > Aug 19 02:51:10 current kernel: info: [drm]   -
>     kern.vt.fb.modes.VGA-1
>     > > Aug 19 02:51:10 current kernel: info: [drm]   -
>     kern.vt.fb.default_mode
>     > > Aug 19 02:51:10 current kernel: info: [drm] Connector
>     HDMI-A-1: get
>     > > mode from tunables:
>     > > Aug 19 02:51:10 current kernel: info: [drm]   -
>     kern.vt.fb.modes.HDMI-A-1
>     > > Aug 19 02:51:10 current kernel: info: [drm]   -
>     kern.vt.fb.default_mode
>     > > Aug 19 02:51:10 current kernel: info: [drm] Connector DP-1:
>     get mode
>     > > from tunables:
>     > > Aug 19 02:51:10 current kernel: info: [drm]   -
>     kern.vt.fb.modes.DP-1
>     > > Aug 19 02:51:10 current kernel: info: [drm]   -
>     kern.vt.fb.default_mode
>     > > Aug 19 02:51:10 current kernel: fbd0 on drmn0
>     > > Aug 19 02:51:10 current kernel: WARNING: Device "fb" is Giant
>     locked
>     > > and may be deleted before>
>     > > Aug 19 02:51:10 current kernel: VT: Replacing driver "vga"
>     with new "fb".
>     > > ug 19 02:51:10 current kernel: info: [drm] Initialized i915 1.6.0
>     > > 20080730 for drmn0 on minor 0
>     > >
>     > > so far so good, quality of text in grafics 1368x1024 is perfectly
>     > > initialized. but now, when starting xinit or lightdm or sddm or
>     > > whatever I get a kernel panic:
>     > >
>     > > Dump header from device: /dev/ada0p4
>     > >
>     > >   Architecture: i386
>     > >   Architecture Version: 4
>     > >   Dump Length: 97792
>     > >   Blocksize: 512
>     > >   Compression: none
>     > >   Dumptime: 2020-08-19 02:49:00 +0200
>     > >   Hostname: current
>     > >   Magic: FreeBSD Text Dump
>     > >   Version String: FreeBSD 13.0-CURRENT #2 r364350: Tue Aug 18
>     20:18:40
>     > >
>     > > CEST 2020
>     > >
>     > >  root_at_current:/usr/obj/usr/src/i386.i386/sys/MIRANDA
>     > >
>     > >   Panic String: vm_page_assert_xbusied: page 0x72bd024 not
>     exclusive
>     > >
>     > > busy _at_ /usr/src/sys/vm/vm>
>     > >
>     > >   Dump Parity: 2773167169
>     > >   Bounds: 1
>     > >   Dump Status: good
>     > >
>     > >   /var/crash/vmcore.0 not found
>     >
>     > Do you have  dumpdev="AUTO" in /etc/rc.conf ?
>     yes and the directory is /var/crash, but this is all I get as lack of
>     insufficent memory of dump, it says.
>
> Sounds like your swap device is to small. How big is it, and how much 
> memory do you have?
>
>
>
>     > > First thing I think is kern options:
>     > >
>     > > options WITNESS_SKIPSPIN
>     > > options WITNESS
>     > >
>     > > I disabled device HYPERV but this can't be the reason, kern is
>     being
>     > > compiled with clang.
>     >
>     > Clang is the default since a long time.
>     depends on gcc++ development in 4D AIs.
>
> Nothing stops you from using gcc for compiling your programs. Clang is 
> just the default for the OS.
>
>
>     > > To disable WITNESS would be one way I think but this can't be the
>     > > yellw of the egg, isn't it?
>     >
>     > I use the GENERIC-NODEBUG kernel config which disables WITNESS
>     for some
>     > performance improvements.
>
>     yup. we don't need another debugger. killing insects is murder but
>     when
>     getting better stuff I never resist to lance them. like housecats
>     with flys.
>
>     > > Another thing but I guess having nothing to do with bug above
>     is on
>     > > rather the end of  startup:
>     > >
>     > > Aug 19 02:51:10 current savecore[1209]: reboot after panic:
>     > > vm_page_assert_xbusied: page 0x72bd024 not exclusive busy _at_
>     > > /usr/src/sys/vm/vm_page.c:1609
>     > > Aug 19 02:51:10 current savecore[1209]: writing core to
>     > > /var/crash/textdump.tar.1
>     > > Aug 19 02:51:10 current kernel: linsysfs:
>     > > Aug 19 02:51:10 current kernel: Device busy
>     > > Aug 19 02:51:10 current kernel: lock order reversal:
>     > > Aug 19 02:51:10 current kernel:  1st 0x3121e870 ufs (ufs,
>     lockmgr) _at_
>     > > /usr/src/sys/kern/vfs_mount.c:1008
>     > > Aug 19 02:51:10 current kernel:  2nd 0x3121e744 devfs (devfs,
>     lockmgr)
>     > > _at_ /usr/src/sys/kern/vfs_mount.c:1019
>     > > Aug 19 02:51:10 current kernel: lock order devfs -> ufs
>     established at:
>     > > Aug 19 02:51:10 current kernel: #0 0x1027cd5 at
>     witness_checkorder+0x3c5
>     > > Aug 19 02:51:10 current kernel: #1 0xf9cca0 at
>     lockmgr_lock_flags+0x140
>     > > Aug 19 02:51:10 current kernel: #2 0x123f697 at ffs_lock+0x57
>     > > Aug 19 02:51:10 current kernel: #3 0x13a1daf at VOP_LOCK1_APV+0x2f
>     > > Aug 19 02:51:10 current kernel: #4 0x10a03df at _vn_lock+0x4f
>     > > Aug 19 02:51:10 current kernel: #5 0x1082d89 at vfs_domount+0xc99
>     > > Aug 19 02:51:10 current kernel: #6 0x108178b at vfs_donmount+0x75b
>     > > Aug 19 02:51:10 current kernel: #7 0x1085017 at kernel_mount+0x57
>     > > Aug 19 02:51:10 current kernel: #8 0x10871c2 at parse_mount+0x452
>     > > Aug 19 02:51:10 current kernel: #9 0x10859be at
>     vfs_mountroot+0x4ce
>     > > Aug 19 02:51:10 current kernel: #10 0xf65912 at start_init+0x22
>     > > Aug 19 02:51:10 current kernel: #11 0xf8aa18 at fork_exit+0x68
>     > > Aug 19 02:51:10 current kernel: #12 0xffc0340e at
>     > > __stop_set_sysinit_set+0xd0a4199e
>     > > Aug 19 02:51:10 current kernel: lock order ufs -> devfs
>     attempted at:
>     > > Aug 19 02:51:10 current kernel: #0 0x1028360 at
>     witness_checkorder+0xa50
>     > > Aug 19 02:51:10 current kernel: #1 0xf9e486 at lockmgr_xlock+0x46
>     > > Aug 19 02:51:10 current kernel: #2 0x107b21a at vop_lock+0x6a
>     > > Aug 19 02:51:10 current kernel: #3 0x13a1daf at VOP_LOCK1_APV+0x2f
>     > > Aug 19 02:51:10 current kernel: #4 0x10a03df at _vn_lock+0x4f
>     > > Aug 19 02:51:10 current kernel: #5 0x1082d89 at vfs_domount+0xc99
>     > > Aug 19 02:51:10 current kernel: #6 0x108178b at vfs_donmount+0x75b
>     > > Aug 19 02:51:10 current kernel: #7 0x1080ffd at sys_nmount+0x5d
>     > > Aug 19 02:51:10 current kernel: #8 0x138c895 at syscall+0x195
>     > > Aug 19 02:51:10 current kernel: #9 0xffc033f9 at
>     > > __stop_set_sysinit_set+0xd0a41989
>     > >
>     > > any ideas?
>     > > Miranda
>     > >
>     > >
>     > >
>     > > does someone know how to fix it?
>     > >
>     > > Miranda
>     >
>     > Hope this helps.
>     It does!
>
>     > Best regards
>     > Andreas Nilsson
>
>     Yours,
>     Miranda van Breukelingen
>
>
> Best regards
> Andreas Nilsson
Received on Thu Aug 20 2020 - 12:58:31 UTC

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