伙计们。我在我的旧 Allwinner A31s 平板电脑上安装了 Arch Linux ARM。我可以通过 UART/串行控制台使用它，但我无法让显示器工作。平板电脑打开时，U-Boot 会加载并在显示屏上显示您的潜艇徽标，但一旦 Arch Linux ARM 开始加载，显示屏就会停止工作并且不显示任何内容。背光始终保持打开状态。到目前为止，我只能通过 UART/串行控制台使用它。谁能告诉我造成这种情况的可能原因或任何解决方案？我正在努力赢得这场旧平板电脑复兴之战。这是最后一步。
我正在使用“ARMv7 多平台”版本。
以下是我的启动日志中有关显示的片段（如果有帮助的话）（此处为完整日志：https://pastebin.com/100U8phr）
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HELLO! BOOT0 is starting!
boot0 version : 3.1.0
reg_addr 0x01f00100 =0x00000000
reg_addr 0x01f00104 =0x00000000
reg_addr 0x01f00108 =0x00000000
reg_addr 0x01f0010c =0x00000000
reg_addr 0x01f00110 =0x00000000
reg_addr 0x01f00114 =0x00000000
[DRAM]ver 1.06 clk = 408
cpu 1 pmu 1
dram size =1024
sum=0xc0352551
src_sum=0xc0352551
Ready to disable icache.
Jump to secend Boot.
[ 0.207]
U-Boot 2011.09-rc1-00000-gfa2c354 (Sep 15 2014 - 09:28:49) Allwinner Technology
[ 0.216]version: 1.1.0
[ 0.229]pmbus: ready
[ 0.232]PMU: AXP221
[ 0.234]PMU: AXP22x found
[ 0.237]PMU: bat ratio = 100
[ 0.240]PMU: dcdc3 1260
[ 0.243]PMU: pll1 1008 Mhz
dcdc1_vol = 3000
dcdc2_vol = 1200
dcdc3_vol = 1260
dcdc4_vol = 1240
dcdc5_vol = 1500
aldo2_vol = 1800
aldo3_vol = 3000
eldo3_vol = 1200
find power_sply to end
fel key old mode
run key detect
no key found
no key input
dram_para_set start
dram_para_set end
[ 0.285]DRAM: 1 GiB
relocation Offset is: 15b12000
donn't initialize ther user_gpio (main_key:boot_init_gpio)
deu_mode1 not exist.
lcdgamma4iep for lcd1 not exist.
DRV_DISP_Init: opened
[ 0.572]fetch script data boot_disp.output_type fail
[ 0.577]fetch script data boot_disp.output_mode fail
[ 0.582]fetch script data boot_disp.auto_hpd fail
[ 0.587]lcd0_para.lcd_used=1
workmode = 0
[ 0.926]NAND: NAND_UbootInit
NAND_UbootInit start
NB1 : enter NAND_LogicInit
uboot:physical version: 2 19 20140617 1840
nand : get id_number_ctl fail, 1
uboot:nand info: a714dead ffff4a42 31c0 40704 5
not burn nand partition table!
[...................]
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Loading Environment from FAT... Unable to use mmc 0:1...
EDID block 0: checksum error, retrying
EDID block 0: checksum error, retrying
EDID block 0: checksum error
Setting up a 1280x800 lcd console (overscan 0x0)
In: serial
Out: serial,vidconsole
Err: serial,vidconsole
Net: No ethernet found.
Hit any key to stop autoboot: 2 1 0
switch to partitions #0, OK
mmc0 is current device
Scanning mmc 0:1...
Found U-Boot script /boot/boot.scr
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[ 0.087906] platform 1e40000.display-backend: Fixing up cyclic dependency with 1e20000.display-frontend
[ 0.087992] platform 1e40000.display-backend: Fixing up cyclic dependency with 1e00000.display-frontend
[ 0.088627] platform 1e50000.drc: Fixing up cyclic dependency with 1c0d000.lcd-controller
[ 0.088752] platform 1e50000.drc: Fixing up cyclic dependency with 1c0c000.lcd-controller
[ 0.088831] platform 1e50000.drc: Fixing up cyclic dependency with 1e40000.display-backend
[ 0.089401] platform 1e60000.display-backend: Fixing up cyclic dependency with 1e20000.display-frontend
[ 0.089484] platform 1e60000.display-backend: Fixing up cyclic dependency with 1e00000.display-frontend
[ 0.090087] platform 1e70000.drc: Fixing up cyclic dependency with 1c0d000.lcd-controller
[ 0.090189] platform 1e70000.drc: Fixing up cyclic dependency with 1c0c000.lcd-controller
[ 0.090266] platform 1e70000.drc: Fixing up cyclic dependency with 1e60000.display-backend
[ 0.093537] kprobes: kprobe jump-optimization is enabled. All kprobes are optimized if possible.
[...................]
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[[0;32m OK [0m] Reached target [0;1;39mMulti-User System[0m.
[[0;32m OK [0m] Reached target [0;1;39mGraphical Interface[0m.
[ 12.915755] usbcore: registered new interface driver rtl8xxxu
[ 12.926174] usbcore: registered new interface driver btusb
[ 12.929155] Bluetooth: hci0: RTL: examining hci_ver=06 hci_rev=000b lmp_ver=06 lmp_subver=1200
[ 12.940567] Bluetooth: hci0: RTL: loading rtl_bt/rtl8723a_fw.bin
[ 12.985526] rtl8xxxu 3-1:1.2 wlu1i2: renamed from wlan0
[ 13.646088] Bluetooth: hci0: RTL: fw version 0x0e3da5b1
Arch Linux 6.2.1-1-ARCH (ttyS0)
alarm login:
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