[Letux-kernel] pyra display trouble with 5.9.1

David Shah dave at ds0.me
Sat Dec 12 12:12:06 CET 2020 

I believe the atomic timeouts when doing DPMS started happening
sometime around 5.7/5.8, they aren't even a 5.9 issue.

It seems like what might be happening is that vblanks are stopping
because the display controller is stopped (as you'd expect doing DPMS),
but something in the atomic code is expecting them still.

Unfortunately, ime the atomic DRM stuff tends to be quite hard to debug
when it goes wrong.

On Sat, 2020-12-12 at 10:22 +0100, H. Nikolaus Schaller wrote:
> 
> > Am 12.12.2020 um 10:14 schrieb David Shah <dave at ds0.me>:
> > 
> > Hi Andreas,
> > 
> > Just to note that I can see the same issue with the OMAP5 Xorg
> > driver
> > when returning from DPMS sleep. I will investigate, but first I
> > need to
> > figure out why the display only works at all after doing a
> > 'modprobe
> > omapdrm'.
> 
> Yes, would be great.
> Just to be sure I have checked there was apparently no significant
> change after 5.9.1
> (unless something did have an unnoticed side-effect).
> 
> https://download.goldelico.com/letux-kernel/letux-5.9.13/src/CHANGES
> 
> > 
> > Best
> > 
> > David
> > 
> > On Fri, 2020-11-20 at 17:41 +0100, Andreas Kemnade wrote:
> > > Hi,
> > > 
> > > I am playing around with the plain modeset Xorg driver and 5.9.1.
> > > I get no picture in X11 but after some time (and doing chvt 1)
> > > I get this:
> > > 
> > > [  235.037060] omapdrm omapdrm.0: atomic complete timeout (pipe
> > > 0)!
> > > [  245.499669] [drm:drm_atomic_helper_wait_for_dependencies
> > > [drm_kms_helper]] *ERROR* [CRTC:55:crtc-0] flip_done timed out
> > > [  255.741763] [drm:drm_atomic_helper_wait_for_dependencies
> > > [drm_kms_helper]] *ERROR* [CONNECTOR:54:DSI-1] flip_done timed
> > > out
> > > root at letux:/etc# [  265.984356]
> > > [drm:drm_atomic_helper_wait_for_dependencies [drm_kms_helper]]
> > > *ERROR* [PLANE:32:plane-0] flip_done timed out
> > > [  266.244246] omapdrm omapdrm.0: atomic complete timeout (pipe
> > > 0)!
> > > [  266.244305] ------------[ cut here ]------------
> > > [  266.244394] WARNING: CPU: 1 PID: 4010 at
> > > drivers/gpu/drm/drm_atomic_helper.c:2314
> > > drm_atomic_helper_commit_hw_done+0xb4/0xcc [drm_kms_helper]
> > > [  266.244396] Modules linked in:[...]
> > > [  266.244610]  bmg160_core bmp280_i2c bno055
> > > industrialio_triggered_buffer bmp280 ecdh_generic usb3503
> > > kfifo_buf
> > > industrialio ecc input_polldev snd_soc_omap_aess
> > > snd_soc_omap_mcbsp
> > > snd_soc_ti_sdma ip_tables x_tables ipv6 autofs4
> > > [  266.244671] CPU: 1 PID: 4010 Comm: Xorg Not tainted 5.9.1-
> > > letux+
> > > #2
> > > [  266.244671] Hardware name: Generic OMAP5 (Flattened Device
> > > Tree)
> > > [  266.244706] [<c010ede4>] (unwind_backtrace) from [<c010a1a4>]
> > > (show_stack+0x10/0x14)
> > > [  266.244732] [<c010a1a4>] (show_stack) from [<c047f480>]
> > > (dump_stack+0x8c/0xac)
> > > [  266.244762] [<c047f480>] (dump_stack) from [<c012fc08>]
> > > (__warn+0xcc/0xe4)
> > > [  266.244784] [<c012fc08>] (__warn) from [<c012ff9c>]
> > > (warn_slowpath_fmt+0x74/0xa0)
> > > [  266.244854] [<c012ff9c>] (warn_slowpath_fmt) from [<bf2d2dd4>]
> > > (drm_atomic_helper_commit_hw_done+0xb4/0xcc [drm_kms_helper])
> > > [  266.245037] [<bf2d2dd4>] (drm_atomic_helper_commit_hw_done
> > > [drm_kms_helper]) from [<bf3f936c>]
> > > (omap_atomic_commit_tail+0x6c/0xb8 [omapdrm])
> > > [  266.245281] [<bf3f936c>] (omap_atomic_commit_tail [omapdrm])
> > > from
> > > [<bf2d310c>] (commit_tail+0x6c/0x138 [drm_kms_helper])
> > > [  266.245519] [<bf2d310c>] (commit_tail [drm_kms_helper]) from
> > > [<bf2d3724>] (drm_atomic_helper_commit+0xf4/0x100
> > > [drm_kms_helper])
> > > [  266.245958] [<bf2d3724>] (drm_atomic_helper_commit
> > > [drm_kms_helper]) from [<bf254570>]
> > > (drm_client_modeset_commit_atomic+0x170/0x1f0 [drm])
> > > [  266.246502] [<bf254570>] (drm_client_modeset_commit_atomic
> > > [drm])
> > > from [<bf254674>] (drm_client_modeset_commit_locked+0x3c/0x148
> > > [drm])
> > > [  266.246899] [<bf254674>] (drm_client_modeset_commit_locked
> > > [drm])
> > > from [<bf2d8918>] (drm_fb_helper_pan_display+0x90/0x174
> > > [drm_kms_helper])
> > > [  266.247051] [<bf2d8918>] (drm_fb_helper_pan_display
> > > [drm_kms_helper]) from [<c04e03cc>] (fb_pan_display+0xec/0x128)
> > > [  266.247089] [<c04e03cc>] (fb_pan_display) from [<c04e0820>]
> > > (fb_set_var+0x290/0x310)
> > > [  266.247139] [<c04e0820>] (fb_set_var) from [<c04e9f90>]
> > > (fbcon_blank+0x78/0x1ac)
> > > [  266.247173] [<c04e9f90>] (fbcon_blank) from [<c054a068>]
> > > (do_unblank_screen+0xe0/0x148)
> > > [  266.247234] [<c054a068>] (do_unblank_screen) from [<c054060c>]
> > > (complete_change_console+0x50/0xcc)
> > > [  266.247294] [<c054060c>] (complete_change_console) from
> > > [<c054139c>] (vt_ioctl+0xd14/0xf80)
> > > [  266.247354] [<c054139c>] (vt_ioctl) from [<c0535cd4>]
> > > (tty_ioctl+0x884/0x918)
> > > [  266.247409] [<c0535cd4>] (tty_ioctl) from [<c0273344>]
> > > (vfs_ioctl+0x20/0x38)
> > > [  266.247448] [<c0273344>] (vfs_ioctl) from [<c0273c84>]
> > > (sys_ioctl+0xcc/0x77c)
> > > [  266.247485] [<c0273c84>] (sys_ioctl) from [<c0100060>]
> > > (ret_fast_syscall+0x0/0x54)
> > > [  266.247509] Exception stack(0xeca91fa8 to 0xeca91ff0)
> > > [  266.247539] 1fa0:                   00000000 0058258c 0000000a
> > > 00005605 00000001 005736d0
> > > [  266.247570] 1fc0: 00000000 0058258c 0056f000 00000036 005825ec
> > > 00582588 ffffffff 00000004
> > > [  266.247600] 1fe0: 0056f300 bed35bfc 0047cef7 b6ae8716
> > > [  266.247631] ---[ end trace 18736e9b1bfd0866 ]---
> > > [  266.503953] omapdrm omapdrm.0: atomic complete timeout (pipe
> > > 0)!
> > > [  276.860295] [drm:drm_atomic_helper_wait_for_dependencies
> > > [drm_kms_helper]] *ERROR* [CRTC:55:crtc-0] flip_done timed out
> > > [  287.092815] [drm:drm_atomic_helper_wait_for_dependencies
> > > [drm_kms_helper]] *ERROR* [CONNECTOR:54:DSI-1] flip_done timed
> > > out
> > > [  297.324596] [drm:drm_atomic_helper_wait_for_dependencies
> > > [drm_kms_helper]] *ERROR* [PLANE:32:plane-0] flip_done timed out
> > > [  297.584100] omapdrm omapdrm.0: atomic complete timeout (pipe
> > > 0)!
> > > [  297.584240] ------------[ cut here ]------------
> > > [  297.584301] WARNING: CPU: 1 PID: 4010 at
> > > drivers/gpu/drm/drm_atomic_helper.c:2314
> > > drm_atomic_helper_commit_hw_done+0xb4/0xcc [drm_kms_helper]
> > > [..] deleted overlong modules line 
> > > [  297.584500]  bmg160_core bmp280_i2c bno055
> > > industrialio_triggered_buffer bmp280 ecdh_generic usb3503
> > > kfifo_buf
> > > industrialio ecc input_polldev snd_soc_omap_aess
> > > snd_soc_omap_mcbsp
> > > snd_soc_ti_sdma ip_tables x_tables ipv6 autofs4
> > > [  297.584545] CPU: 1 PID: 4010 Comm: Xorg Tainted: G       
> > > W         5.9.1-letux+ #2
> > > [  297.584546] Hardware name: Generic OMAP5 (Flattened Device
> > > Tree)
> > > [  297.584576] [<c010ede4>] (unwind_backtrace) from [<c010a1a4>]
> > > (show_stack+0x10/0x14)
> > > [  297.584606] [<c010a1a4>] (show_stack) from [<c047f480>]
> > > (dump_stack+0x8c/0xac)
> > > [  297.584615] [<c047f480>] (dump_stack) from [<c012fc08>]
> > > (__warn+0xcc/0xe4)
> > > [  297.584637] [<c012fc08>] (__warn) from [<c012ff9c>]
> > > (warn_slowpath_fmt+0x74/0xa0)
> > > [  297.584684] [<c012ff9c>] (warn_slowpath_fmt) from [<bf2d2dd4>]
> > > (drm_atomic_helper_commit_hw_done+0xb4/0xcc [drm_kms_helper])
> > > [  297.584759] [<bf2d2dd4>] (drm_atomic_helper_commit_hw_done
> > > [drm_kms_helper]) from [<bf3f936c>]
> > > (omap_atomic_commit_tail+0x6c/0xb8 [omapdrm])
> > > [  297.584820] [<bf3f936c>] (omap_atomic_commit_tail [omapdrm])
> > > from
> > > [<bf2d310c>] (commit_tail+0x6c/0x138 [drm_kms_helper])
> > > [  297.584900] [<bf2d310c>] (commit_tail [drm_kms_helper]) from
> > > [<bf2d3724>] (drm_atomic_helper_commit+0xf4/0x100
> > > [drm_kms_helper])
> > > [  297.585033] [<bf2d3724>] (drm_atomic_helper_commit
> > > [drm_kms_helper]) from [<bf254570>]
> > > (drm_client_modeset_commit_atomic+0x170/0x1f0 [drm])
> > > [  297.585211] [<bf254570>] (drm_client_modeset_commit_atomic
> > > [drm])
> > > from [<bf254674>] (drm_client_modeset_commit_locked+0x3c/0x148
> > > [drm])
> > > [  297.585339] [<bf254674>] (drm_client_modeset_commit_locked
> > > [drm])
> > > from [<bf2d8918>] (drm_fb_helper_pan_display+0x90/0x174
> > > [drm_kms_helper])
> > > [  297.585389] [<bf2d8918>] (drm_fb_helper_pan_display
> > > [drm_kms_helper]) from [<c04e03cc>] (fb_pan_display+0xec/0x128)
> > > [  297.585400] [<c04e03cc>] (fb_pan_display) from [<c04ec16c>]
> > > (bit_update_start+0x14/0x30)
> > > [  297.585418] [<c04ec16c>] (bit_update_start) from [<c04e89e0>]
> > > (fbcon_switch+0x2f4/0x3b4)
> > > [  297.585430] [<c04e89e0>] (fbcon_switch) from [<c05491b0>]
> > > (redraw_screen+0x138/0x1ac)
> > > [  297.585446] [<c05491b0>] (redraw_screen) from [<c04ea07c>]
> > > (fbcon_blank+0x164/0x1ac)
> > > [  297.585461] [<c04ea07c>] (fbcon_blank) from [<c054a068>]
> > > (do_unblank_screen+0xe0/0x148)
> > > [  297.585478] [<c054a068>] (do_unblank_screen) from [<c054060c>]
> > > (complete_change_console+0x50/0xcc)
> > > [  297.585491] [<c054060c>] (complete_change_console) from
> > > [<c054139c>] (vt_ioctl+0xd14/0xf80)
> > > [  297.585519] [<c054139c>] (vt_ioctl) from [<c0535cd4>]
> > > (tty_ioctl+0x884/0x918)
> > > [  297.585524] [<c0535cd4>] (tty_ioctl) from [<c0273344>]
> > > (vfs_ioctl+0x20/0x38)
> > > [  297.585552] [<c0273344>] (vfs_ioctl) from [<c0273c84>]
> > > (sys_ioctl+0xcc/0x77c)
> > > [  297.585552] [<c0273c84>] (sys_ioctl) from [<c0100060>]
> > > (ret_fast_syscall+0x0/0x54)
> > > [  297.585565] Exception stack(0xeca91fa8 to 0xeca91ff0)
> > > [  297.585583] 1fa0:                   00000000 0058258c 0000000a
> > > 00005605 00000001 005736d0
> > > [  297.585583] 1fc0: 00000000 0058258c 0056f000 00000036 005825ec
> > > 00582588 ffffffff 00000004
> > > [  297.585596] 1fe0: 0056f300 bed35bfc 0047cef7 b6ae8716
> > > [  297.585612] ---[ end trace 18736e9b1bfd0867 ]---
> > > [  297.843578] omapdrm omapdrm.0: atomic complete timeout (pipe
> > > 0)!
> > > _______________________________________________
> > > Kernel mailing list
> > > Kernel at pyra-handheld.com
> > > http://pyra-handheld.com/cgi-bin/mailman/listinfo/kernel
> > 
> > 
> > _______________________________________________
> > Kernel mailing list
> > Kernel at pyra-handheld.com
> > http://pyra-handheld.com/cgi-bin/mailman/listinfo/kernel
>

More information about the Letux-kernel mailing list