龙芯 3B6000 更新至 V25 正式版后无法进入桌面

[Glavo]

我最开始在 3B6000 上安装了 V25 Beta，这是系统信息：

我使用 V25 Beta 版本一切正常，但在正式版发布后，我进行了 apt upgrade，然后重启后无法进入桌面，虽然有显示输出，但一直保持黑屏状态。这个状态下可以 ssh 连接，自动息屏功能也在工作，键盘输入任意键后也能从息屏状态恢复，但依然保持黑屏。

我尝试切换到其他 tty，一切正常，但尝试 startx 就会让此 tty 也进入黑屏状态。dmesg 没看到什么特别的输出，Xorg.0.log 中包含以下内容：

[     7.433] (II) Loading sub module "fb"
[     7.433] (II) LoadModule: "fb"
[     7.433] (II) Module "fb" already built-in
[     7.433] (EE) 
[     7.433] (EE) Backtrace:
[     7.433] (EE) 0: /usr/lib/xorg/Xorg (xorg_backtrace+0x68) [0x1201e5568]
[     7.433] (EE) 1: /usr/lib/xorg/Xorg (0x120000000+0x1e9d24) [0x1201e9d24]
[     7.433] (EE) 2: linux-vdso.so.1 (__vdso_rt_sigreturn+0x0) [0x7ffffe20cfa0]
[     7.433] (EE) 3: /lib/loongarch64-linux-gnu/libc.so.6 (0x7ffff27c4000+0x844a0) [0x7ffff28484a0]
[     7.433] (EE) 4: /lib/loongarch64-linux-gnu/libc.so.6 (gsignal+0x1c) [0x7ffff27fa77c]
[     7.433] (EE) 5: /lib/loongarch64-linux-gnu/libc.so.6 (abort+0xe8) [0x7ffff27e42b4]
[     7.433] (EE) 6: /lib/loongarch64-linux-gnu/libc.so.6 (0x7ffff27c4000+0x2f34c) [0x7ffff27f334c]
[     7.433] (EE) 7: /lib/loongarch64-linux-gnu/libc.so.6 (0x7ffff27c4000+0x2f3bc) [0x7ffff27f33bc]
[     7.433] (EE) 8: /usr/lib/xorg/Xorg (dixRegisterPrivateKey+0x1e0) [0x120073228]
[     7.433] (EE) 9: /usr/lib/xorg/modules/libglamoregl.so (glamor_init+0xb8) [0x7ffff1e4f218]
[     7.433] (EE) 10: /usr/lib/xorg/modules/drivers/modesetting_drv.so (0x7ffff1e94000+0x13dd4) [0x7ffff1ea7dd4]
[     7.433] (EE) 11: /usr/lib/xorg/modules/drivers/modesetting_drv.so (0x7ffff1e94000+0x98a0) [0x7ffff1e9d8a0]
[     7.433] (EE) 12: /usr/lib/xorg/Xorg (AddGPUScreen+0xc8) [0x12004e680]
[     7.433] (EE) 13: /usr/lib/xorg/Xorg (0x120000000+0xb4788) [0x1200b4788]
[     7.433] (EE) 14: /usr/lib/xorg/Xorg (0x120000000+0xbaf34) [0x1200baf34]
[     7.434] (EE) 15: /usr/lib/xorg/Xorg (0x120000000+0xb6f3c) [0x1200b6f3c]
[     7.434] (EE) 16: /usr/lib/xorg/Xorg (0x120000000+0xb70a8) [0x1200b70a8]
[     7.434] (EE) 17: /usr/lib/xorg/Xorg (0x120000000+0x1ea904) [0x1201ea904]
[     7.434] (EE) 18: /usr/lib/xorg/Xorg (WaitForSomething+0x16c) [0x1201e21ec]
[     7.434] (EE) 19: /usr/lib/xorg/Xorg (0x120000000+0x4df44) [0x12004df44]
[     7.434] (EE) 20: /usr/lib/xorg/Xorg (0x120000000+0x52c18) [0x120052c18]
[     7.434] (EE) 21: /lib/loongarch64-linux-gnu/libc.so.6 (0x7ffff27c4000+0x207c8) [0x7ffff27e47c8]
[     7.434] (EE) 22: /lib/loongarch64-linux-gnu/libc.so.6 (__libc_start_main+0xa8) [0x7ffff27e48b0]
[     7.434] (EE) 23: /usr/lib/xorg/Xorg (_start+0x48) [0x120037d40]
[     7.434] (EE) 
[     7.434] (EE) 
Fatal server error:
[     7.434] (EE) Caught signal 6 (Aborted). Server aborting
[     7.434] (EE) 
[     7.434] (EE) 
Please consult the The X.Org Foundation support 
	 at http://wiki.x.org
 for help. 
[     7.434] (EE) Please also check the log file at "/var/log/Xorg.0.log" for additional information.
[     7.434] (EE) 
[     7.434] (EE) Server terminated with error (1). Closing log file.

然后我格式化了硬盘，尝试从头安装 V25 正式版。Live CD 表现完全正常，能够正常安装系统，但重启进入系统后又进入了黑屏状态，无法配置系统。

[xzl01]

请提供下硬件信息以方便定位，特别是内存是否为龙芯提供的兼用列表中推荐的内存型号