好消息是目前 Pi 4 有小改版,型號為 v1.2。根據 theregister 的報導,新版修正了 USB-C 的供電問題,可適用大部分的充電線(器)。此外,新版還進行了絲印的調整,可以減少焊接過程中發生錫橋。
檢查的方式是在命令列執行 cat /proc/cpuinfo,如果是 Pi4/4GB 在版本號(Revision)的部份會顯示 c03112,型號(Model)會顯示 Raspberry Pi 4 Model B Rev 1.2 就是新版(v1.2)。如果在 Revision 顯示 c03111,Model 顯示 Raspberry Pi 4 Model B Rev 1.1 那就是舊版(v1.1)。我們販售的 Pi 4 都是新版。
pi@raspberrypi:~ $ cat /proc/cpuinfo
processor : 0
model name : ARMv7 Processor rev 3 (v7l)
BogoMIPS : 108.00
Features : half thumb fastmult vfp edsp neon vfpv3 tls vfpv4 idiva idivt vfpd32 lpae evtstrm crc32
CPU implementer : 0x41
CPU architecture: 7
CPU variant : 0x0
CPU part : 0xd08
CPU revision : 3
...
Hardware : BCM2835
Revision : c03112
Serial : 10000000abb7260c
Model : Raspberry Pi 4 Model B Rev 1.2
The official and recommended USB-C power supply for Raspberry Pi 4
《規格》
* 45 X 48 X 27mm (不含線長及插頭長)
* 線長:約 1.5M(18 AWG captive cable)
* 插頭類型:USB Type-C
* Input:96V-264V AC
* Output:5.1V DC up to 3.0 A
* 輸出功率:15.3W
* 具短路、過載及過熱保護
* 顏色:黑色 / 白色隨機出貨
2019-06-20:
* Based on Debian Buster
* Support for Raspberry Pi 4 hardware
* FKMS OpenGL desktop graphics driver and xcompmgr compositing window manager used when running on Raspberry Pi 4
* Screen Configuration application added for use with FKMS driver
* Raspberry Pi 4 video output options added to Raspberry Pi Configuration
* Uses new PiXflat UI theme for GTK and Openbox
* CPU activity gauge plugin no longer shown on taskbar by default
* CPU temperature gauge plugin added (not shown by default)
* USB ejecter and Bluetooth taskbar icons hidden when not appropriate
* Version 74.0.3729.157 of Chromium web browser included
* Version 32.0.0.207 of Flash player included
* IDLE Python IDE removed
* Wolfram Mathematica removed temporarily due to incompatibility with Buster
* Display of package sizes removed from Recommended Software
* Appearance Settings modified to support independent settings for two monitors
* Oracle Java 7 and 8 replaced with OpenJDK 11
* Miscellaneous small bug fixes
* On-board 5GHz WiFi blocked by rfkill by default
The block is removed when taking one of the following actions:
- Selecting a locale in the first run wizard
- Setting the WiFi country in the Raspberry Pi Configuration tool or the Network Settings applet
- Setting the WiFi country in raspi-config
- Providing a wpa_supplicant.conf file through the boot partition
- Running 'rfkill unblock wifi'
* Boot partition size set to 256M
* Linux kernel 4.19.50
* Raspberry Pi firmware 88ca9081f5e51cdedd16d5dbc85ed12a25123201