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powersaving jam of flipping frames bug, which causes jammed display and flipping frames.

powersaving jam of flipping frames bug, which causes jammed display and flipping frames.

https://barrelmem.s3.eu-north-1.amazonaws.com/flippingframesbug/VID_20230302_024831-manjaro-powersaving.mp4

device: pinephone 3GB variant, mali 400, this was tested on 1.2b hardware version.

os: manjaro

[root@manjaro-arm ~]# pacman -Si mesa
Repository      : extra
Name            : mesa
Version         : 22.3.5-0.2
Description     : An open-source implementation of the OpenGL specification
Architecture    : aarch64
URL             : https://www.mesa3d.org/
Licenses        : custom
Groups          : None
Provides        : mesa-libgl  opengl-driver
Depends On      : libdrm  wayland  libxxf86vm  libxdamage  libxshmfence  libelf  libomxil-bellagio  libunwind  llvm-libs  lm_sensors  libglvnd  zstd  vulkan-icd-loader  libsensors.so=5-64  libexpat.so=1-64
                  libvulkan.so
Optional Deps   : opengl-man-pages: for the OpenGL API man pages
                  mesa-vdpau: for accelerated video playback
                  libva-mesa-driver: for accelerated video playback
Conflicts With  : mesa-libgl
Replaces        : mesa-libgl
Download Size   : 21.97 MiB
Installed Size  : 59.49 MiB
Packager        : Philip Müller <philm@manjaro.org>
Build Date      : Tue 14 Feb 2023 04:31:25 PM UTC
Validated By    : MD5 Sum  SHA-256 Sum  Signature

[root@manjaro-arm ~]# pacman -Si linux-pinephone
Repository      : core
Name            : linux-pinephone
Version         : 6.1.9-2
Description     : The Linux Kernel and modules - PinePhone Kernel (Megi)
Architecture    : aarch64
URL             : https://github.com/megous/linux/releases/tag/orange-pi-6.1-20230201-2322
Licenses        : GPL2
Groups          : None
Provides        : kernel26  linux=6.1.9
Depends On      : coreutils  kmod  mkinitcpio>=0.7  rtl8723bt-firmware  anx7688-firmware  ov5640-firmware
Optional Deps   : crda: to set the correct wireless channels of your country
                  rtl8723bt-firmware-megi: for Pinephone Bluetooth
                  ov5640-firmware: for Pinephone Camera
                  uboot-pinephone: Firmware for Pinephone
Conflicts With  : linux
Replaces        : linux-armv8-rc
Download Size   : 22.64 MiB
Installed Size  : 35.39 MiB
Packager        : Manjaro Build Server <build@manjaro.org>
Build Date      : Mon 13 Feb 2023 07:37:58 AM UTC
Validated By    : MD5 Sum  SHA-256 Sum  Signature

[root@manjaro-arm ~]# 
[root@manjaro-arm ~]# inxi -GSC -xx 
System:
  Host: manjaro-arm Kernel: 6.1.9-2-MANJARO-ARM arch: aarch64 bits: 64 compiler: gcc v: 12.1.0
    Console: pty pts/1 Distro: Manjaro ARM base: Arch Linux
CPU:
  Info: quad core model: N/A variant: cortex-a53 bits: 64 type: MCP arch: ARMv8 rev: 4
  Speed (MHz): avg: 1152 min/max: 648/1152 cores: 1: 1152 2: 1152 3: 1152 4: 1152 bogomips: N/A
  Features: Use -f option to see features
Graphics:
  Device-1: sun50i-a64-mali driver: lima v: kernel bus-ID: N/A chip-ID: allwinner:1c40000
  Device-2: sun50i-a64-dw-hdmi driver: sun8i_dw_hdmi v: N/A bus-ID: N/A
    chip-ID: allwinner:1ee0000
  Device-3: sun50i-a64-display-engine driver: sun4i_drm v: N/A bus-ID: N/A
    chip-ID: allwinner:display-engine
  Device-4: sun9i-a80-hdmi-audio driver: N/A bus-ID: N/A chip-ID: allwinner:sound_hdmi
  Display: server: X.org v: 1.21.1.7 with: Xwayland v: 22.1.8 compositor: phoc driver: N/A
    note: X driver n/a tty: 213x52
  Monitor-1: DSI-1 size-res: N/A in console
  API: OpenGL Message: GL data unavailable in console for root.
[root@manjaro-arm ~]#

some logs, logs are full of this, so it is cut. i didn't find "lima job timeout" this time.

[10136.669145] ------------[ cut here ]------------
[10136.669170] WARNING: CPU: 0 PID: 0 at drivers/gpu/drm/lima/lima_devfreq.c:205 lima_devfreq_record_idle+0xa0/0xb0
[10136.669212] Modules linked in: option qmi_wwan usb_wwan cdc_wdm usbserial usbnet rfcomm bnep ov5640 gc2145 hci_uart snd_soc_simple_card snd_soc_simple_card_utils btrtl st_magn_spi btbcm st_sensors_spi st_magn_i2c bluetooth 8723cs(C) zram st_magn inv_mpu6050_i2c st_sensors_i2c inv_mpu6050 st_sensors zsmalloc panel_sitronix_st7703 industrialio_triggered_buffer ecdh_generic kfifo_buf ecc stk3310 sun50i_codec_analog sun8i_adda_pr_regmap anx7688 sunxi sun4i_i2s sun8i_a33_mbus typec sun8i_codec phy_generic snd_soc_ec25 snd_soc_simple_amplifier snd_soc_bt_sco leds_sgm3140 snd_soc_core display_connector i2c_gpio snd_pcm_dmaengine snd_pcm snd_timer snd soundcore cfg80211 rfkill nls_iso8859_1 pinephone_keyboard sun4i_lradc_keys
[10136.669433] CPU: 0 PID: 0 Comm: swapper/0 Tainted: G        WC         6.1.9-2-MANJARO-ARM #1
[10136.669443] Hardware name: Pine64 PinePhone (1.2) (DT)
[10136.669449] pstate: 600000c5 (nZCv daIF -PAN -UAO -TCO -DIT -SSBS BTYPE=--)
[10136.669459] pc : lima_devfreq_record_idle+0xa0/0xb0
[10136.669472] lr : lima_devfreq_record_idle+0x34/0xb0
[10136.669482] sp : ffff800008003e70
[10136.669486] x29: ffff800008003e70 x28: ffff8000091a2f80 x27: ffff800008ebc130
[10136.669501] x26: ffff8000091a2f80 x25: 0000000000000000 x24: 0000000000000000
[10136.669515] x23: ffff000003aafe00 x22: 0000000000000018 x21: ffff000002a8da24
[10136.669529] x20: 00000000000000c0 x19: ffff000002a8d9f0 x18: ffff0000055a9df0
[10136.669543] x17: ffff8000b6954000 x16: ffff800008004000 x15: 0000000000004000
[10136.669557] x14: 000000000000013e x13: 000000000000013e x12: ffff800009199a88
[10136.669571] x11: 0000000000000001 x10: 0000000000000000 x9 : 0000000000000003
[10136.669585] x8 : ffff000003c63da8 x7 : ffff000003c63db8 x6 : 00000038ab999238
[10136.669599] x5 : 00ffffffffffffff x4 : 000984afdbfc383d x3 : 00000938228ee3ea
[10136.669613] x2 : 00000000ffffffff x1 : fffff6c7e07431ce x0 : 00000000030436f2
[10136.669628] Call trace:
[10136.669634]  lima_devfreq_record_idle+0xa0/0xb0
[10136.669646]  lima_sched_pipe_task_done+0x5c/0xb0
[10136.669656]  lima_gp_irq_handler+0xa8/0x120
[10136.669666]  __handle_irq_event_percpu+0x48/0x160
[10136.669679]  handle_irq_event+0x4c/0xc0
[10136.669686]  handle_fasteoi_irq+0xa4/0x1a0
[10136.669697]  generic_handle_domain_irq+0x2c/0x4c
[10136.669711]  gic_handle_irq+0x44/0xc0
[10136.669724]  call_on_irq_stack+0x2c/0x5c
[10136.669736]  do_interrupt_handler+0x80/0x84
[10136.669747]  el1_interrupt+0x34/0x6c
[10136.669760]  el1h_64_irq_handler+0x18/0x2c
[10136.669770]  el1h_64_irq+0x64/0x68
[10136.669777]  arch_cpu_idle+0x18/0x2c
[10136.669788]  default_idle_call+0x30/0x6c
[10136.669798]  do_idle+0x244/0x2c0
[10136.669810]  cpu_startup_entry+0x24/0x30
[10136.669819]  kernel_init+0x0/0x12c
[10136.669829]  arch_post_acpi_subsys_init+0x0/0x18
[10136.669843]  start_kernel+0x658/0x698
[10136.669853]  __primary_switched+0xb4/0xbc
[10136.669864] ---[ end trace 0000000000000000 ]---
[10136.674721] ------------[ cut here ]------------
[10136.674743] WARNING: CPU: 0 PID: 0 at drivers/gpu/drm/lima/lima_devfreq.c:205 lima_devfreq_record_idle+0xa0/0xb0
[10136.674775] Modules linked in: option qmi_wwan usb_wwan cdc_wdm usbserial usbnet rfcomm bnep ov5640 gc2145 hci_uart snd_soc_simple_card snd_soc_simple_card_utils btrtl st_magn_spi btbcm st_sensors_spi st_magn_i2c bluetooth 8723cs(C) zram st_magn inv_mpu6050_i2c st_sensors_i2c inv_mpu6050 st_sensors zsmalloc panel_sitronix_st7703 industrialio_triggered_buffer ecdh_generic kfifo_buf ecc stk3310 sun50i_codec_analog sun8i_adda_pr_regmap anx7688 sunxi sun4i_i2s sun8i_a33_mbus typec sun8i_codec phy_generic snd_soc_ec25 snd_soc_simple_amplifier snd_soc_bt_sco leds_sgm3140 snd_soc_core display_connector i2c_gpio snd_pcm_dmaengine snd_pcm snd_timer snd soundcore cfg80211 rfkill nls_iso8859_1 pinephone_keyboard sun4i_lradc_keys
[10136.674994] CPU: 0 PID: 0 Comm: swapper/0 Tainted: G        WC         6.1.9-2-MANJARO-ARM #1
[10136.675005] Hardware name: Pine64 PinePhone (1.2) (DT)
[10136.675011] pstate: 600000c5 (nZCv daIF -PAN -UAO -TCO -DIT -SSBS BTYPE=--)
[10136.675021] pc : lima_devfreq_record_idle+0xa0/0xb0
[10136.675032] lr : lima_devfreq_record_idle+0x34/0xb0
[10136.675042] sp : ffff800008003e90
[10136.675047] x29: ffff800008003e90 x28: ffff8000091a2f80 x27: ffff800008ebc130
[10136.675062] x26: ffff8000091a2f80 x25: 0000000000000000 x24: 0000000000000000
[10136.675076] x23: ffff000003aae000 x22: 0000000000000019 x21: ffff000002a8da24
[10136.675090] x20: 00000000000000c0 x19: ffff000002a8d9f0 x18: 0000000000000000
[10136.675103] x17: ffff8000b6954000 x16: ffff800008004000 x15: 0000000000004000
[10136.675118] x14: 0000000000000127 x13: 0000000000000127 x12: ffff800009199a88
[10136.675131] x11: 0000000000001028 x10: 0000000000001020 x9 : 0000000000001fff
[10136.675145] x8 : 000000000000100c x7 : 0000000000000080 x6 : 00000038ab9c8038
[10136.675159] x5 : 00ffffffffffffff x4 : 0009fec200d9b83d x3 : 0000093822e38ed2
[10136.675172] x2 : 00000000ffffffff x1 : fffff6c7dd1c712e x0 : 000000000001542c
[10136.675187] Call trace:
[10136.675192]  lima_devfreq_record_idle+0xa0/0xb0
[10136.675204]  lima_sched_pipe_task_done+0x5c/0xb0
[10136.675214]  lima_pp_irq_handler+0xb0/0xbc
[10136.675224]  __handle_irq_event_percpu+0x48/0x160
[10136.675235]  handle_irq_event+0x4c/0xc0
[10136.675243]  handle_fasteoi_irq+0xa4/0x1a0
[10136.675253]  generic_handle_domain_irq+0x2c/0x4c
[10136.675269]  gic_handle_irq+0x44/0xc0
[10136.675281]  call_on_irq_stack+0x2c/0x5c
[10136.675291]  do_interrupt_handler+0x80/0x84
[10136.675302]  el1_interrupt+0x34/0x6c
[10136.675314]  el1h_64_irq_handler+0x18/0x2c
[10136.675323]  el1h_64_irq+0x64/0x68
[10136.675331]  arch_cpu_idle+0x18/0x2c
[10136.675342]  default_idle_call+0x30/0x6c
[10136.675351]  do_idle+0x244/0x2c0
[10136.675362]  cpu_startup_entry+0x24/0x30
[10136.675372]  kernel_init+0x0/0x12c
[10136.675382]  arch_post_acpi_subsys_init+0x0/0x18
[10136.675395]  start_kernel+0x658/0x698
[10136.675405]  __primary_switched+0xb4/0xbc
[10136.675416] ---[ end trace 0000000000000000 ]---

this bug happens randomly with normal settings (see workaround), maybe once a week. adjusting gpu powersaving settings this can be avoided. this bug is difficult to replicate. all pinephones are affected what i know, and practically all gnu/linux distributions are affected. both plasma and phosh are affected, sxmo is not tested.

how to replicate:

do something simple on screen without screen saving options and similar. then run some heavy cpu and networking activity in a background. in mobiledata bug is more likely, in wifi bug is less likely. usb networking dongle could be used. testing may take hours, at least more than minutes.

# displays something simple on a screen
while true
do echo -n "  a  b  c  d  e  f  g  h  i  j  k  l  m  n  o  p  q  r  s  t  u  v  w  x  y  z  "
#echo -n "   a   b   c   d   e   f   g   h   i   j   k   l   m   n   o   p   q   r   s   t   u   v   w   x   y   z   0   1   2   3   4   5   6   7   8   9   -   *   ^   &   +   #   $   %   ;   <   >   /   \   |   _   !   .   ,   "
sleep 0.5
done
# this wastes cpu and networking resources

for repe in `seq 1 4`

do for rep in  `seq 1 \`seq 1 4 |shuf -n 1\``
do for rep2 in `seq 1 \`seq 1 4 |shuf -n 1\``
do wget --timeout=10 http://location-of-files/file-1M-${rep2}${rep}.dd &
dd if=/dev/urandom of=/dev/null bs=1M count=999 &
done
done

wait
#sleep 0.5
rm file*

done

related bug #8410 (closed) . this bug has some differences.

https://forum.pine64.org/showthread.php?tid=17771&highlight=flipping+frames

workaround:

# udev rule. this prevent flipping frames bug
# example file location /lib/udev/rules.d/98-preventflippingbug.rules
# powersaving part
KERNEL=="1c40000.gpu", SUBSYSTEM=="platform", DRIVER=="lima", ATTR{power/autosuspend_delay_ms}="-1"
KERNEL=="1c40000.gpu", SUBSYSTEM=="platform", DRIVER=="lima", ATTR{power/control}="on"
# frequency part, may not be needed
KERNEL=="1c40000.gpu", SUBSYSTEM=="devfreq", ATTR{min_freq}="432000000"
KERNEL=="1c40000.gpu", SUBSYSTEM=="devfreq", ATTR{max_freq}="432000000"
Edited by zetabeta sigma
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