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Bug#952452: marked as done (initramfs-tools: prefers serial console over framebuffer console)

Your message dated Wed, 26 Feb 2020 23:10:45 +0000
with message-id <d34275ad9d4e0ff0ae8860f56323b0740cb07d34.camel@decadent.org.uk>
and subject line Re: Bug#952452: initramfs-tools: prefers serial console over framebuffer console
has caused the Debian Bug report #952452,
regarding initramfs-tools: prefers serial console over framebuffer console
to be marked as done.

This means that you claim that the problem has been dealt with.
If this is not the case it is now your responsibility to reopen the
Bug report if necessary, and/or fix the problem forthwith.

(NB: If you are a system administrator and have no idea what this
message is talking about, this may indicate a serious mail system
misconfiguration somewhere. Please contact owner@bugs.debian.org
immediately.)


-- 
952452: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=952452
Debian Bug Tracking System
Contact owner@bugs.debian.org with problems
--- Begin Message --- 
Package: initramfs-tools
Version: 0.136
Severity: minor

Dear kernel team,
I'm using Debian on an arm64 chromebook, and not setting "console=tty1" in the kernel command line results in a number of weird behaviours related to the initramfs.
During an ordinary boot, plymouth doesn't show the futureprototype boot splash. Instead, it shows the init log; but pressing ESC does switch to plymouth (but with what I'm assuming is the text theme instead).
If I use "break" (even "break=init") in the kernel command line, I don't see an initramfs shell prompt and the keyboard does nothing. If plymouth is installed, I see the "Spawning shell within the initramfs" message but rest is the same (plymouth quits in it's panic hook).
When I'm trying to boot from an encrypted root (different installation), I don't see the "Please unlock disk" cryptsetup prompt and can't type a passphrase; unless plymouth is installed.
I'm able to boot the encrypted system as a QEMU virtual machine and I get similar behaviour there, no messages or prompts are printed to the graphical console and instead all go to the serial console. However having plymouth doesn't make the cryptsetup prompt ask in the graphical console in the virtual machine.
All these are fixed by simply adding "console=tty1" to the command line, is that something a user is supposed to do manually (e.g. GRUB configs)? Should the initramfs (or maybe the kernel itself) be detecting when graphics are working and automatically switch outputs/prompts to that? I want to work on this, what would be the best way to proceed? 


-- Might be relevant:
-- /proc/consoles:
ttyS2                -W- (EC p a)    4:66
tty0                 -WU (E  p  )    4:7

-- Some dmesg lines that might be useful:
[    0.000000] Booting Linux on physical CPU 0x0000000000 [0x410fd034]
[    0.000000] Linux version 5.4.0-4-arm64 (...)
[    0.000000] Machine model: Google Kevin
[    0.001029] Console: colour dummy device 80x25
[    0.001038] printk: console [tty0] enabled
[    0.044788] Serial: AMBA PL011 UART driver
[    1.853700] Serial: 8250/16550 driver, 4 ports, IRQ sharing enabled
[ 1.855861] ff1a0000.serial: ttyS2 at MMIO 0xff1a0000 (irq = 39, base_baud = 1500000) is a 16550A 
[    1.856046] printk: console [ttyS2] enabled
[    1.857318] Serial: AMBA driver
[    1.857898] msm_serial: driver initialized
[    2.103745] ttyS2 - failed to request DMA
[    2.159994] Run /init as init process
[ 2.785121] rockchip-drm display-subsystem: bound ff8f0000.vop (ops rockchip_drm_fini [rockchipdrm]) [ 2.787381] rockchip-drm display-subsystem: bound ff900000.vop (ops rockchip_drm_fini [rockchipdrm]) [ 2.794270] rockchip-drm display-subsystem: bound ff970000.edp (ops rockchip_drm_fini [rockchipdrm]) [ 2.794439] rockchip-drm display-subsystem: bound fec00000.dp (ops rockchip_drm_fini [rockchipdrm]) 
[    2.794446] [drm] Supports vblank timestamp caching Rev 2 (21.10.2013).
[    2.794449] [drm] No driver support for vblank timestamp query.
[ 2.824898] cdn-dp fec00000.dp: [drm:cdn_dp_pd_event_work [rockchipdrm]] Not connected. Disabling cdn 
[    3.076232] Console: switching to colour frame buffer device 300x100
[ 3.132091] rockchip-drm display-subsystem: fb0: rockchipdrmfb frame buffer device [ 3.144856] [drm] Initialized rockchip 1.0.0 20140818 for display-subsystem on minor 0 
[    4.972935] systemd[1]: systemd 244.3-1 running in system mode. (...)


-- Package-specific info:
-- initramfs sizes
-rw-r--r-- 1 root root 12M Jan 19 11:20 /boot/initrd.img-5.4.0-2-arm64
-rw-r--r-- 1 root root 16M Feb  8 12:52 /boot/initrd.img-5.4.0-3-arm64
-rw-r--r-- 1 root root 16M Feb 19 14:25 /boot/initrd.img-5.4.0-4-arm64
-- /proc/cmdline
cros_secure kern_guid=7849fbba-1fb3-4f0b-9989-952567ef5a3c root=PARTUUID=3518689e-a82c-4448-9ec2-c79b13f88d8e rootwait quiet splash 

-- resume
RESUME=UUID=490bfb86-ee41-4944-8bcf-4f4b2211026d
-- /proc/filesystems
	ext3
	ext2
	ext4
	fuseblk

-- lsmod
Module                  Size  Used by
vhost_net              32768  0
vhost                  49152  1 vhost_net
tap                    32768  1 vhost_net
uhid                   24576  1
algif_hash             20480  1
algif_skcipher         16384  1
af_alg                 28672  6 algif_hash,algif_skcipher
rfcomm                 81920  16
fuse                  139264  5
xt_CHECKSUM            16384  1
xt_MASQUERADE          20480  3
xt_conntrack           16384  1
ipt_REJECT             16384  2
nf_reject_ipv4         16384  1 ipt_REJECT
xt_tcpudp              20480  6
nft_compat             20480  13
nft_counter            16384  30
nft_chain_nat          16384  8
nf_nat                 45056  2 nft_chain_nat,xt_MASQUERADE
nf_conntrack          159744  3 xt_conntrack,nf_nat,xt_MASQUERADE
nf_defrag_ipv6         24576  1 nf_conntrack
nf_defrag_ipv4         16384  1 nf_conntrack
libcrc32c              16384  2 nf_conntrack,nf_nat
nf_tables             151552  102 nft_compat,nft_counter,nft_chain_nat
nfnetlink              20480  2 nft_compat,nf_tables
tun                    61440  2 vhost_net
bridge                212992  0
stp                    16384  1 bridge
llc                    20480  2 bridge,stp
bnep                   32768  2
btusb                  61440  0
btrtl                  24576  1 btusb
btbcm                  20480  1 btusb
btintel                28672  1 btusb
bluetooth             606208  43 btrtl,btintel,btbcm,bnep,btusb,rfcomm
drbg                   32768  1
ansi_cprng             20480  0
ecdh_generic           16384  2 bluetooth
ecc                    32768  1 ecdh_generic
sd_mod                 57344  0
sg                     53248  0
uas                    32768  0
usb_storage            73728  1 uas
scsi_mod              233472  4 sd_mod,usb_storage,uas,sg
uvcvideo              114688  0
videobuf2_vmalloc      20480  1 uvcvideo
videobuf2_memops       20480  1 videobuf2_vmalloc
videobuf2_v4l2         28672  1 uvcvideo
videobuf2_common       53248  2 videobuf2_v4l2,uvcvideo
videodev              266240  3 videobuf2_v4l2,uvcvideo,videobuf2_common
mc 57344 4 videodev,videobuf2_v4l2,uvcvideo,videobuf2_common 
aes_ce_blk             32768  5
crypto_simd            20480  1 aes_ce_blk
cryptd                 20480  2 crypto_simd
joydev                 32768  0
hid_generic            16384  0
aes_ce_cipher          16384  1 aes_ce_blk
xhci_plat_hcd          20480  0
xhci_hcd              253952  1 xhci_plat_hcd
ghash_ce               20480  0
gf128mul               16384  1 ghash_ce
dwc3                  163840  0
mwifiex_pcie           45056  0
tpm_i2c_infineon       20480  0
udc_core               49152  1 dwc3
sha2_ce                16384  1
mwifiex               311296  1 mwifiex_pcie
tpm                    69632  1 tpm_i2c_infineon
ulpi                   20480  1 dwc3
i2c_hid                36864  0
rng_core               20480  2 tpm
snd_soc_rt5514         53248  1
sha256_arm64           24576  1 sha2_ce
atmel_mxt_ts           40960  0
hid                   139264  3 i2c_hid,hid_generic,uhid
cfg80211              696320  1 mwifiex
snd_soc_rt5514_spi     16384  2 snd_soc_rt5514
sha1_ce                16384  0
sbs_battery            24576  0
snd_soc_rk3399_gru_sound    24576  1
snd_soc_rl6231         20480  1 snd_soc_rt5514
governor_simpleondemand    16384  0
snd_soc_da7219         69632  2 snd_soc_rk3399_gru_sound
panfrost               65536  0
ntc_thermistor         20480  0
dwc3_of_simple         20480  0
snd_soc_rockchip_i2s    20480  4
snd_soc_hdmi_codec     20480  1
snd_soc_max98357a      20480  1
gpio_keys              24576  0
snd_soc_rockchip_pcm    16384  1 snd_soc_rockchip_i2s
rfkill                 36864  6 bluetooth,cfg80211
gpu_sched              36864  1 panfrost
ohci_platform          16384  0
snd_soc_core 204800 8 snd_soc_rk3399_gru_sound,snd_soc_rockchip_pcm,snd_soc_da7219,snd_soc_hdmi_codec,snd_soc_rockchip_i2s,snd_soc_rt5514,snd_soc_max98357a,snd_soc_rt5514_spi 
ohci_hcd               57344  1 ohci_platform
dw_wdt                 20480  0
ehci_platform          16384  0
snd_pcm_dmaengine      20480  1 snd_soc_core
ofpart                 20480  0
sdhci_of_arasan        20480  1
watchdog               36864  1 dw_wdt
nvmem_rockchip_efuse    16384  0
cros_ec_sensors        16384  0
snd_pcm 122880 5 snd_soc_da7219,snd_soc_hdmi_codec,snd_soc_core,snd_soc_rt5514_spi,snd_pcm_dmaengine 
ehci_hcd               94208  1 ehci_platform
sdhci_pltfm            16384  1 sdhci_of_arasan
rockchip_saradc        24576  0
cros_ec_sensors_core    16384  1 cros_ec_sensors
spi_nor                61440  0
snd_timer              45056  1 snd_pcm
usbcore 290816 10 ohci_platform,xhci_hcd,ohci_hcd,ehci_platform,usb_storage,uvcvideo,ehci_hcd,btusb,uas,xhci_plat_hcd 
cqhci                  32768  1 sdhci_of_arasan
industrialio_triggered_buffer    16384  1 cros_ec_sensors
cros_usbpd_charger     20480  0
kfifo_buf              16384  1 industrialio_triggered_buffer
snd 102400 7 snd_soc_rk3399_gru_sound,snd_soc_hdmi_codec,snd_timer,snd_soc_core,snd_pcm 
sdhci                  65536  2 sdhci_pltfm,sdhci_of_arasan
cros_usbpd_logger      20480  0
cros_ec_sysfs          16384  0
mtd                    77824  3 spi_nor,ofpart
industrialio 77824 6 industrialio_triggered_buffer,cros_ec_sensors,ntc_thermistor,kfifo_buf,rockchip_saradc,cros_ec_sensors_core 
cros_ec_debugfs        16384  0
soundcore              20480  1 snd
cros_ec_lightbar       16384  0
cros_ec_chardev        24576  0
i2c_rk3x               28672  0
coreboot_table         16384  0
rockchip_thermal       28672  0
cpufreq_dt             20480  0
i2c_cros_ec_tunnel     16384  0
binfmt_misc            24576  1
ip_tables              32768  0
x_tables 45056 7 xt_conntrack,nft_compat,xt_tcpudp,xt_CHECKSUM,ipt_REJECT,ip_tables,xt_MASQUERADE 
autofs4                53248  2
ext4                  700416  1
crc16                  16384  2 bluetooth,ext4
mbcache                24576  1 ext4
jbd2                  135168  1 ext4
crc32c_generic         16384  3
evdev                  36864  14
rtc_cros_ec            16384  1
extcon_usbc_cros_ec    20480  0
cros_ec_keyb           20480  0
pwm_cros_ec            20480  1
matrix_keymap          16384  1 cros_ec_keyb
cros_ec_dev            20480  0
cros_ec_spi            24576  0
cros_ec                20480  1 cros_ec_spi
rockchipdrm           114688  2
analogix_dp            53248  1 rockchipdrm
dw_hdmi                40960  1 rockchipdrm
cec                    53248  1 dw_hdmi
dw_mipi_dsi            20480  1 rockchipdrm
panel_simple           65536  0
drm_kms_helper        176128  4 dw_mipi_dsi,rockchipdrm,dw_hdmi,analogix_dp
gpio_regulator         16384  2
pwm_regulator          16384  4
vctrl_regulator        16384  3
fixed                  20480  34
drm 503808 10 gpu_sched,drm_kms_helper,dw_mipi_dsi,panel_simple,rockchipdrm,dw_hdmi,panfrost,analogix_dp 
phy_rockchip_pcie      20480  4
phy_rockchip_inno_usb2    40960  12
usb_common 16384 10 xhci_hcd,ohci_hcd,ehci_platform,phy_rockchip_inno_usb2,usbcore,uvcvideo,ehci_hcd,xhci_plat_hcd,dwc3,udc_core 
rockchip_io_domain     24576  0
phy_rockchip_emmc      20480  1
phy_rockchip_typec     20480  6
dw_mmc_rockchip        20480  0
pwm_rockchip           16384  4
dw_mmc_pltfm           16384  1 dw_mmc_rockchip
spi_rockchip           24576  0
pl330                  45056  10
dw_mmc                 49152  2 dw_mmc_pltfm,dw_mmc_rockchip
pwm_bl                 20480  0

-- /etc/initramfs-tools/modules

-- /etc/kernel-img.conf
# Kernel image management overrides
# See kernel-img.conf(5) for details
do_symlinks = yes
do_bootloader = no
do_initrd = yes
link_in_boot = yes

-- /etc/initramfs-tools/initramfs.conf
MODULES=dep
BUSYBOX=auto
KEYMAP=n
COMPRESS=gzip
DEVICE=
NFSROOT=auto
RUNSIZE=10%

-- /etc/initramfs-tools/update-initramfs.conf
update_initramfs=yes
backup_initramfs=no

-- /sys/block
mmcblk0
mmcblk1
mmcblk1boot0
mmcblk1boot1
sda

-- mkinitramfs hooks
/etc/initramfs-tools/hooks/:
firmware
remove-panfrost

/usr/share/initramfs-tools/hooks:
dmsetup
fsck
fuse
keymap
klibc-utils
kmod
lvm2
ntfs_3g
plymouth
resume
thermal
thin-provisioning-tools
udev
zz-busybox


-- System Information:
Debian Release: bullseye/sid
  APT prefers unstable
  APT policy: (500, 'unstable'), (1, 'experimental')
Architecture: arm64 (aarch64)

Kernel: Linux 5.4.0-4-arm64 (SMP w/6 CPU cores)
Locale: LANG=en_GB.UTF-8, LC_CTYPE=en_GB.UTF-8 (charmap=UTF-8), LANGUAGE=en_GB:en (charmap=UTF-8) 
Shell: /bin/sh linked to /usr/bin/dash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled

Versions of packages initramfs-tools depends on:
ii  initramfs-tools-core  0.136
ii  linux-base            4.6

initramfs-tools recommends no packages.

Versions of packages initramfs-tools suggests:
ii  bash-completion  1:2.10-1

-- no debconf information

--- End Message ---
--- Begin Message --- 
On Wed, 2020-02-26 at 17:10 +0300, Alper Nebi Yasak wrote:
> On 24/02/2020 19:50, Alper Nebi Yasak wrote:
> > I'm using Debian on an arm64 chromebook, and not setting "console=tty1"
> > in the kernel command line results in a number of weird behaviours
> > related to the initramfs.
> 
> Turns out my device-tree has (for debugging purposes?):
> 
>      chosen {
>              stdout-path = "serial2:115200n8";
>      };
> 
> Removing that makes everything work on the screen again, but that's a 
> worse way to solve it compared to adding a kernel cmdline arg.
> 
> QEMU on aarch64 does a similar thing according to [0]:
> 
>      $ sudo dmesg | grep -i console
>      [    0.000000] ACPI: SPCR: console: pl011,mmio,0x9000000,9600
>      ...
> 
> [0] https://bugzilla.redhat.com/show_bug.cgi?id=1661288#c35
> 
> Those seem to be the root cause.

A device that is intended to be used with keyboard and video display
should not have this in the device tree for production units.  If we
ship the device tree then we can correct that.  If not, then the boot
loader should be configured to override it, and the installer could do
that by default.

I don't think it makes sense for initramfs-tools to do this, as the
wrong default console will still affect other software.

Ben.

-- 
Ben Hutchings
Tomorrow will be cancelled due to lack of interest.

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