Lenovo XiaoXin 15are 2020 (简体中文)
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小新-15 2020（AMD 平台：ARE 版） 是联想发布的基于 AMD Renoir 的笔记本电脑。该款电脑主要在中国大陆销售，最相似的国际版型号为 IdeaPad 5 15ARE。
| Component | Functioning |
|---|---|
| Microcode | 是 |
| AMDGPU | Partial |
| Wireless | Partial |
| Bluetooth | 是 |
| Webcam | 是 |
| Screen Brightness | Partial |
| Keyboard backlight | 是 |
| Touchpad | Partial |
| Audio | 是 |
| Suspend | 是 |
| Fingerprint reader | 否 |
UEFI
在安装 ArchLinux 之前，请关闭 BIOS 中的 Secure Boot。在开机第一屏按 F2 就能够进入 BIOS，按 F12 能够进入启动菜单。
您可以在这里找到 BIOS 的更新：小新-15 2020(AMD平台：ARE版) 驱动列表 的 BIOS 栏目下，提供了一个 Windows 安装程序。 使用 innoextract (1.8 版本经过测试) 来提取下载的 BIOS-E7CN39WW.exe 中的 E7CN39WW.exe，这是 Phoneix 的 BIOS 安装器，但是它不能用 innoextract 再次提取。
Noto Button
您也可以使用 "Noto Boot Menu"， 它相比于 BIOS 和 启动菜单提供了更多的选项。在开机状态下，按 Fn + <电源键>来启动它。详细信息参见官方用户手册 小新-15ARE用户指南。
F2 和 F12 keys 无法使用
Windows 20H2 安装器（消费者版本，更新于2021年2月）经测试会删除这些按键进入 BIOS 设置和启动菜单的功能。这是微软有意为之还是只是 Windows 的一个 bug 仍然不明。目前 (2021年3月3日），这个型号的笔记本仍然在保修期内，您可以找官方售后恢复主板的 BIOS 信息。
目前的建议是：如果您想要安装 Windows, 请使用低版本，如 1903。 我没有测试过 Windows 中的大版本更新，请小心更新。如果可能的话，不要多重引导 Windows。
详细信息参见 UEFI#Windows changes boot order。
处理器
小新-15 2020（AMD 平台：ARE 版） 包含一个 AMD Ryzen APU。您可以按如下方式提取精确型号：
$ lscpu | awk -F ": *" '/Model name/{print $NF}'
AMD Ryzen 7 4800U with Radeon Graphics
$ lspci | awk -F ": *" '/VGA compatible controller/{print $NF}'
Advanced Micro Devices, Inc. [AMD/ATI] Renoir (rev c1)
CPU
强烈推荐启用专有微码更新，详细信息参见 Ryzen 和 Microcode。可通过如下方式验证已经成功启用了微码更新：
# dmesg | grep microcode
[ 1.512299] microcode: CPU0: patch_level=0x08600102 [ 1.512320] microcode: CPU1: patch_level=0x08600102 [ 1.512345] microcode: CPU2: patch_level=0x08600102 [ 1.512361] microcode: CPU3: patch_level=0x08600102 [ 1.512388] microcode: CPU4: patch_level=0x08600102 [ 1.512404] microcode: CPU5: patch_level=0x08600102 [ 1.512435] microcode: CPU6: patch_level=0x08600102 [ 1.512453] microcode: CPU7: patch_level=0x08600102 [ 1.512477] microcode: CPU8: patch_level=0x08600102 [ 1.512498] microcode: CPU9: patch_level=0x08600102 [ 1.512521] microcode: CPU10: patch_level=0x08600102 [ 1.512535] microcode: CPU11: patch_level=0x08600102 [ 1.512558] microcode: CPU12: patch_level=0x08600102 [ 1.512572] microcode: CPU13: patch_level=0x08600102 [ 1.512575] microcode: CPU14: patch_level=0x08600102 [ 1.512593] microcode: CPU15: patch_level=0x08600102 [ 1.512689] microcode: Microcode Update Driver: v2.2.
lscpu:的原始输出样例：
$ lscpu
Architecture: x86_64
CPU op-mode(s): 32-bit, 64-bit
Byte Order: Little Endian
Address sizes: 44 bits physical, 48 bits virtual
CPU(s): 16
On-line CPU(s) list: 0-15
Thread(s) per core: 2
Core(s) per socket: 8
Socket(s): 1
NUMA node(s): 1
Vendor ID: AuthenticAMD
CPU family: 23
Model: 96
Model name: AMD Ryzen 7 4800U with Radeon Graphics
Stepping: 1
Frequency boost: enabled
CPU MHz: 1922.650
CPU max MHz: 1800.0000
CPU min MHz: 1400.0000
BogoMIPS: 3594.08
Virtualization: AMD-V
L1d cache: 256 KiB
L1i cache: 256 KiB
L2 cache: 4 MiB
L3 cache: 8 MiB
NUMA node0 CPU(s): 0-15
Vulnerability Itlb multihit: Not affected
Vulnerability L1tf: Not affected
Vulnerability Mds: Not affected
Vulnerability Meltdown: Not affected
Vulnerability Spec store bypass: Mitigation; Speculative Store Bypass disabled via prctl and seccomp
Vulnerability Spectre v1: Mitigation; usercopy/swapgs barriers and __user pointer sanitization
Vulnerability Spectre v2: Mitigation; Full AMD retpoline, IBPB conditional, IBRS_FW, STIBP conditional, RSB filling
Vulnerability Tsx async abort: Not affected
Flags: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ht sy
scall nx mmxext fxsr_opt pdpe1gb rdtscp lm constant_tsc rep_good nopl nonstop_tsc cpuid extd_apicid ape
rfmperf pni pclmulqdq monitor ssse3 fma cx16 sse4_1 sse4_2 movbe popcnt aes xsave avx f16c rdrand lahf_
lm cmp_legacy svm extapic cr8_legacy abm sse4a misalignsse 3dnowprefetch osvw ibs skinit wdt tce topoex
t perfctr_core perfctr_nb bpext perfctr_llc mwaitx cpb cat_l3 cdp_l3 hw_pstate sme ssbd mba sev ibrs ib
pb stibp vmmcall fsgsbase bmi1 avx2 smep bmi2 cqm rdt_a rdseed adx smap clflushopt clwb sha_ni xsaveopt
xsavec xgetbv1 xsaves cqm_llc cqm_occup_llc cqm_mbm_total cqm_mbm_local clzero irperf xsaveerptr rdpru
wbnoinvd arat npt lbrv svm_lock nrip_save tsc_scale vmcb_clean flushbyasid decodeassists pausefilter p
fthreshold avic v_vmsave_vmload vgif umip rdpid overflow_recov succor smca
GPU
Xorg 可与当前的 linux 和 xf86-video-amdgpu一起正常运行。
声音
声音与 Linux 中的 PulseAudio 兼容，开箱即用。
网络连接
无线控制器
无线控制器开箱即用，详细信息参见Network configuration/Wireless。
$ lspci | awk -F ": *" '/Network controller/{print $NF}'
Realtek Semiconductor Co., Ltd. RTL8822CE 802.11ac PCIe Wireless Network Adapter
蓝牙控制器
开箱即用，详细信息参见蓝牙。
$ lsusb
... Bus 001 Device 003: ID 0bda:c123 Realtek Semiconductor Corp. Bluetooth Radio ...
音频
开箱即用, 详细信息参见 Sound system。
$ lspci | grep Audio | awk -F ": *" '{$1=$2="";print $0}'
Advanced Micro Devices, Inc. [AMD/ATI] Device 1637 Advanced Micro Devices, Inc. [AMD] Raven/Raven2/FireFlight/Renoir Audio Processor (rev 01) Advanced Micro Devices, Inc. [AMD] Family 17h (Models 10h-1fh) HD Audio Controller
触控板
触控板在大多数时候开箱不可用。
您需要先将其从 elants_i2c 解绑，然后再将其绑定到 i2c_hid 。
提示： 切换到 root 用户运行如下命令 (sudo su), 因为普通用户即使用 sudo 也没有权限
$ modprobe i2c_hid # echo "i2c-ELAN0001:00" > /sys/bus/i2c/drivers/elants_i2c/unbind # echo "i2c-ELAN0001:00" > /sys/bus/i2c/drivers/i2c_hid/bind
现在需要将 elants_i2c 模块加入黑名单，因此你不必每次都解绑、绑定。
# echo "blacklist elants_i2c" | tee /etc/modprobe.d/touchpad.conf
注意，触控板可能仍无法正常运行并伴随如下的错误信息：
Mar 03 21:50:14 localhost.localdomain kernel: i2c_hid i2c-ELAN0001:00: HID over i2c has not been provided an Int IRQ Mar 03 21:50:14 localhost.localdomain kernel: i2c_hid: probe of i2c-ELAN0001:00 failed with error -22
这种情况下，移除 i2c_hid 并重新加载它：
# rmmod i2c_hid # modprobe i2c_hid
硬件组件原始列表
$ lspci
00:00.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Renoir Root Complex 00:00.2 IOMMU: Advanced Micro Devices, Inc. [AMD] Renoir IOMMU 00:01.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Renoir PCIe Dummy Host Bridge 00:02.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Renoir PCIe Dummy Host Bridge 00:02.2 PCI bridge: Advanced Micro Devices, Inc. [AMD] Renoir PCIe GPP Bridge 00:02.4 PCI bridge: Advanced Micro Devices, Inc. [AMD] Renoir PCIe GPP Bridge 00:08.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Renoir PCIe Dummy Host Bridge 00:08.1 PCI bridge: Advanced Micro Devices, Inc. [AMD] Renoir Internal PCIe GPP Bridge to Bus 00:08.2 PCI bridge: Advanced Micro Devices, Inc. [AMD] Renoir Internal PCIe GPP Bridge to Bus 00:14.0 SMBus: Advanced Micro Devices, Inc. [AMD] FCH SMBus Controller (rev 51) 00:14.3 ISA bridge: Advanced Micro Devices, Inc. [AMD] FCH LPC Bridge (rev 51) 00:18.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Renoir Device 24: Function 0 00:18.1 Host bridge: Advanced Micro Devices, Inc. [AMD] Renoir Device 24: Function 1 00:18.2 Host bridge: Advanced Micro Devices, Inc. [AMD] Renoir Device 24: Function 2 00:18.3 Host bridge: Advanced Micro Devices, Inc. [AMD] Renoir Device 24: Function 3 00:18.4 Host bridge: Advanced Micro Devices, Inc. [AMD] Renoir Device 24: Function 4 00:18.5 Host bridge: Advanced Micro Devices, Inc. [AMD] Renoir Device 24: Function 5 00:18.6 Host bridge: Advanced Micro Devices, Inc. [AMD] Renoir Device 24: Function 6 00:18.7 Host bridge: Advanced Micro Devices, Inc. [AMD] Renoir Device 24: Function 7 01:00.0 Network controller: Realtek Semiconductor Co., Ltd. RTL8822CE 802.11ac PCIe Wireless Network Adapter 02:00.0 Non-Volatile memory controller: Micron/Crucial Technology P1 NVMe PCIe SSD (rev 03) 03:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Renoir (rev c1) 03:00.1 Audio device: Advanced Micro Devices, Inc. [AMD/ATI] Device 1637 03:00.2 Encryption controller: Advanced Micro Devices, Inc. [AMD] Family 17h (Models 10h-1fh) Platform Security Processor 03:00.3 USB controller: Advanced Micro Devices, Inc. [AMD] Renoir USB 3.1 03:00.4 USB controller: Advanced Micro Devices, Inc. [AMD] Renoir USB 3.1 03:00.5 Multimedia controller: Advanced Micro Devices, Inc. [AMD] Raven/Raven2/FireFlight/Renoir Audio Processor (rev 01) 03:00.6 Audio device: Advanced Micro Devices, Inc. [AMD] Family 17h (Models 10h-1fh) HD Audio Controller 04:00.0 SATA controller: Advanced Micro Devices, Inc. [AMD] FCH SATA Controller [AHCI mode] (rev 81) 04:00.1 SATA controller: Advanced Micro Devices, Inc. [AMD] FCH SATA Controller [AHCI mode] (rev 81)
$ lsusb
Bus 004 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub Bus 003 Device 003: ID 27c6:55a2 Shenzhen Goodix Technology Co.,Ltd. Goodix FingerPrint Device Bus 003 Device 002: ID 0bda:c123 Realtek Semiconductor Corp. Bluetooth Radio Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub Bus 001 Device 003: ID 13d3:56ff IMC Networks Integrated Camera Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub