我在装有 AMD Radeon Pro WX 4150 视频设备的 Dell Precision 7530 上运行 Xubuntu Bionic (18.04.3) 时遇到问题。我最近从此位置，特别是文件amdgpu-pro-19.30-934563-ubuntu-18.04.tar.xz。
哪些措施有效
- 加密登录屏幕有效
- X 在笔记本电脑显示屏上运行良好
- 通过底座连接的显示器（使用 WD19DC 底座）
哪些地方没有发挥作用
- 笔记本电脑上的 HDMI 输出
- 笔记本电脑上的 Mini-DP 输出
- OpenGL
- 许多 Qt 应用程序（可能是因为 OpenGL 损坏）
具体来说，xrandr报告称它知道笔记本电脑上的 HDMI 和 DisplayPort 连接，但连接到这些端口时无法识别任何东西。
此外，OpenGL 框架内似乎没有任何功能可以工作。输出glxinfo：
name of display: :0.0
Error: couldn't find RGB GLX visual or fbconfig
输出glxgears：
Error: couldn't get an RGB, Double-buffered visual
调试细节
lspci -vv显示Intel集成显卡和AMD显卡的相关行：
00:02.0 VGA compatible controller: Intel Corporation Device 3e9b (prog-if 00 [VGA controller])
Subsystem: Dell Device 0831
Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx+
Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
Latency: 0, Cache Line Size: 64 bytes
Interrupt: pin A routed to IRQ 130
Region 0: Memory at b3000000 (64-bit, non-prefetchable) [size=16M]
Region 2: Memory at 60000000 (64-bit, prefetchable) [size=256M]
Region 4: I/O ports at 4000 [size=64]
[virtual] Expansion ROM at 000c0000 [disabled] [size=128K]
Capabilities: <access denied>
Kernel driver in use: i915
Kernel modules: i915
01:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Baffin [Radeon Pro WX 4130/4150] (prog-if 00 [VGA controller])
Subsystem: Dell Baffin [Polaris11]
Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx+
Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
Latency: 0, Cache Line Size: 64 bytes
Interrupt: pin A routed to IRQ 143
Region 0: Memory at 4100000000 (64-bit, prefetchable) [size=4G]
Region 2: Memory at 4080000000 (64-bit, prefetchable) [size=2M]
Region 4: I/O ports at 3000 [size=256]
Region 5: Memory at b4200000 (32-bit, non-prefetchable) [size=256K]
Expansion ROM at b4240000 [disabled] [size=128K]
Capabilities: <access denied>
Kernel driver in use: amdgpu
Kernel modules: amdgpu
输出dmesg | grep -i amdgpu：
[ 2.094881] [drm] amdgpu kernel modesetting enabled.
[ 2.094883] [drm] amdgpu version: 5.0.73.19.30
[ 2.097461] amdgpu 0000:01:00.0: enabling device (0000 -> 0003)
[ 2.475623] amdgpu 0000:01:00.0: BAR 2: releasing [mem 0x80000000-0x801fffff 64bit pref]
[ 2.475624] amdgpu 0000:01:00.0: BAR 0: releasing [mem 0x70000000-0x7fffffff 64bit pref]
[ 2.475646] amdgpu 0000:01:00.0: BAR 0: assigned [mem 0x4100000000-0x41ffffffff 64bit pref]
[ 2.475651] amdgpu 0000:01:00.0: BAR 2: assigned [mem 0x4080000000-0x40801fffff 64bit pref]
[ 2.475674] amdgpu 0000:01:00.0: VRAM: 4096M 0x000000F400000000 - 0x000000F4FFFFFFFF (4096M used)
[ 2.475675] amdgpu 0000:01:00.0: GART: 256M 0x000000FF00000000 - 0x000000FF0FFFFFFF
[ 2.475868] [drm] amdgpu: 4096M of VRAM memory ready
[ 2.475869] [drm] amdgpu: 15796M of GTT memory ready.
[ 2.477995] amdgpu: [powerplay] hwmgr_sw_init smu backed is polaris10_smu
[ 3.151808] [drm:hwss_edp_wait_for_hpd_ready [amdgpu]] *ERROR* hwss_edp_wait_for_hpd_ready: wait timed out!
[ 3.755912] [drm:hwss_edp_wait_for_hpd_ready [amdgpu]] *ERROR* hwss_edp_wait_for_hpd_ready: wait timed out!
[ 4.177658] [drm] Initialized amdgpu 3.33.0 20150101 for 0000:01:00.0 on minor 1
[ 14.269498] amdgpu 0000:01:00.0: GPU pci config reset
[ 68.615509] [drm:hwss_edp_wait_for_hpd_ready [amdgpu]] *ERROR* hwss_edp_wait_for_hpd_ready: wait timed out!
[ 69.223488] [drm:hwss_edp_wait_for_hpd_ready [amdgpu]] *ERROR* hwss_edp_wait_for_hpd_ready: wait timed out!
以下是 的输出grep -i "glx\|amdgpu" Xorg.0.log：
[ 70.624] (**) ModulePath set to "/opt/amdgpu-pro/lib/xorg/modules,/opt/amdgpu/lib/xorg/modules,/usr/lib/xorg/modules"
[ 70.643] (II) LoadModule: "glx"
[ 70.644] (II) Loading /opt/amdgpu-pro/lib/xorg/modules/extensions/libglx.so
[ 70.651] (II) Module glx: vendor="X.Org Foundation"
[ 70.651] (II) Applying OutputClass "AMDgpu" to /dev/dri/card1
[ 70.651] loading driver: amdgpu
[ 70.651] (==) Matched amdgpu as autoconfigured driver 0
[ 70.651] (II) LoadModule: "amdgpu"
[ 70.652] (II) Loading /opt/amdgpu/lib/xorg/modules/drivers/amdgpu_drv.so
[ 70.653] (II) Module amdgpu: vendor="X.Org Foundation"
[ 70.656] (II) Applying OutputClass "AMDgpu" to /dev/dri/card1
[ 70.656] loading driver: amdgpu
[ 70.656] (==) Matched amdgpu as autoconfigured driver 0
[ 70.656] (II) LoadModule: "amdgpu"
[ 70.656] (II) Loading /opt/amdgpu/lib/xorg/modules/drivers/amdgpu_drv.so
[ 70.656] (II) Module amdgpu: vendor="X.Org Foundation"
[ 70.656] (II) AMDGPU: Driver for AMD Radeon:
All GPUs supported by the amdgpu kernel driver
[ 70.675] (II) AMDGPU(G0): [KMS] Kernel modesetting enabled.
[ 71.254] (==) AMDGPU(G0): Depth 24, (--) framebuffer bpp 32
[ 71.254] (II) AMDGPU(G0): Pixel depth = 24 bits stored in 4 bytes (32 bpp pixmaps)
[ 71.254] (==) AMDGPU(G0): Default visual is TrueColor
[ 71.254] (==) AMDGPU(G0): RGB weight 888
[ 71.254] (II) AMDGPU(G0): Using 8 bits per RGB (8 bit DAC)
[ 71.254] (--) AMDGPU(G0): Chipset: "AMD Radeon (TM) Pro WX Series" (ChipID = 0x67e8)
[ 71.400] (II) AMDGPU(G0): glamor X acceleration enabled on AMD Radeon (TM) Pro WX Series
[ 71.400] (II) AMDGPU(G0): glamor detected, initialising EGL layer.
[ 71.400] (==) AMDGPU(G0): TearFree property default: auto
[ 71.400] (II) AMDGPU(G0): Output eDP-1-1 has no monitor section
[ 71.400] (II) AMDGPU(G0): Output DisplayPort-1-3 has no monitor section
[ 71.400] (II) AMDGPU(G0): Output DisplayPort-1-4 has no monitor section
[ 71.400] (II) AMDGPU(G0): Output DisplayPort-1-5 has no monitor section
[ 71.400] (II) AMDGPU(G0): Output HDMI-A-1-1 has no monitor section
[ 71.401] (II) AMDGPU(G0): EDID for output eDP-1-1
[ 71.401] (II) AMDGPU(G0): EDID for output DisplayPort-1-3
[ 71.401] (II) AMDGPU(G0): EDID for output DisplayPort-1-4
[ 71.401] (II) AMDGPU(G0): EDID for output DisplayPort-1-5
[ 71.401] (II) AMDGPU(G0): EDID for output HDMI-A-1-1
[ 71.401] (II) AMDGPU(G0): mem size init: gart size :3dadf1000 vram size: s:ffad1000 visible:bfc1cc00
[ 71.401] (II) AMDGPU(G0): Video RAM: 4188996 kByte
[ 71.401] (==) AMDGPU(G0): DPI set to (96, 96)
[ 71.401] (==) AMDGPU(G0): Using gamma correction (1.0, 1.0, 1.0)
[ 71.401] (II) AMDGPU(G0): [DRI2] Setup complete
[ 71.401] (II) AMDGPU(G0): [DRI2] DRI driver: radeonsi
[ 71.401] (II) AMDGPU(G0): [DRI2] VDPAU driver: radeonsi
[ 71.401] (II) AMDGPU(G0): Front buffer pitch: 4096 bytes
[ 71.402] (==) AMDGPU(G0): Backing store enabled
[ 71.402] (II) AMDGPU(G0): Direct rendering enabled
[ 71.451] (II) AMDGPU(G0): Use GLAMOR acceleration.
[ 71.451] (II) AMDGPU(G0): Acceleration enabled
[ 71.451] (==) AMDGPU(G0): DPMS enabled
[ 71.451] (==) AMDGPU(G0): Silken mouse enabled
[ 71.510] (II) Initializing extension GLX
[ 71.510] (II) AIGLX: Screen 0 is not DRI2 capable
[ 71.510] (EE) AIGLX: reverting to software rendering
[ 71.510] (II) GLX: no usable GL providers found for screen 0
最后三行表明存在一个潜在问题。
当许多 Qt 应用程序尝试启动时，段错误出现在 中dmesg，大概是因为他们希望 OpenGL 能够工作。损坏的应用程序示例：Wireshark、QDirStat 等。以下是 Wireshark 尝试启动时的示例：
[ 4574.568730] wireshark[12453]: segfault at 10 ip 00007f2ebfde6530 sp 00007ffdfeb2ea70 error 4 in libdrm_amdgpu.so.1.0.0[7f2ebfdde000+c000]
控制台输出wireshark：
screen 0 does not appear to be DRI2 capable
screen 0 does not appear to be DRI2 capable
amdgpu_device_initialize: amdgpu_get_auth (1) failed (-1)
Segmentation fault
gdb wireshark这是发生段错误后产生的回溯：
(gdb) r
Starting program: /usr/bin/wireshark
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[New Thread 0x7fffde8ad700 (LWP 14468)]
screen 0 does not appear to be DRI2 capable
screen 0 does not appear to be DRI2 capable
amdgpu_device_initialize: amdgpu_get_auth (1) failed (-1)
Thread 1 "wireshark" received signal SIGSEGV, Segmentation fault.
0x00007fffdcde6530 in amdgpu_query_info () from /opt/amdgpu/lib/x86_64-linux-gnu/libdrm_amdgpu.so.1
(gdb) bt
#0 0x00007fffdcde6530 in amdgpu_query_info () from /opt/amdgpu/lib/x86_64-linux-gnu/libdrm_amdgpu.so.1
#1 0x00007fffd607654c in ?? () from /usr/lib/x86_64-linux-gnu/dri/amdgpu_dri.so
#2 0x00007fffd6081248 in ?? () from /usr/lib/x86_64-linux-gnu/dri/amdgpu_dri.so
#3 0x00007fffd5e88678 in ?? () from /usr/lib/x86_64-linux-gnu/dri/amdgpu_dri.so
#4 0x00007fffd5eb388f in ?? () from /usr/lib/x86_64-linux-gnu/dri/amdgpu_dri.so
#5 0x00007fffd51782c5 in ?? () from /usr/lib/x86_64-linux-gnu/dri/amdgpu_dri.so
#6 0x00007fffd5cd354c in ?? () from /usr/lib/x86_64-linux-gnu/dri/amdgpu_dri.so
#7 0x00007fffd6073c7b in ?? () from /usr/lib/x86_64-linux-gnu/dri/amdgpu_dri.so
#8 0x00007fffd5d9106e in ?? () from /usr/lib/x86_64-linux-gnu/dri/amdgpu_dri.so
#9 0x00007fffd5d91576 in ?? () from /usr/lib/x86_64-linux-gnu/dri/amdgpu_dri.so
#10 0x00007fffd5d94709 in eglInitialize () from /usr/lib/x86_64-linux-gnu/dri/amdgpu_dri.so
#11 0x00007fffdd87f3c4 in ?? () from /usr/lib/x86_64-linux-gnu/qt5/plugins/xcbglintegrations/libqxcb-egl-integration.so
#12 0x00007fffe2e5b369 in QXcbConnection::QXcbConnection(QXcbNativeInterface*, bool, unsigned int, char const*) () from /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#13 0x00007fffe2e5e7fe in QXcbIntegration::QXcbIntegration(QStringList const&, int&, char**) () from /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#14 0x00007fffe31242ab in ?? () from /usr/lib/x86_64-linux-gnu/qt5/plugins/platforms/libqxcb.so
#15 0x00007ffff04c3add in QPlatformIntegrationFactory::create(QString const&, QStringList const&, int&, char**, QString const&) () from /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
#16 0x00007ffff04d4922 in QGuiApplicationPrivate::createPlatformIntegration() () from /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
#17 0x00007ffff04d545d in QGuiApplicationPrivate::createEventDispatcher() () from /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
#18 0x00007fffeff20885 in QCoreApplicationPrivate::init() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#19 0x00007ffff04d6eef in QGuiApplicationPrivate::init() () from /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
#20 0x00007ffff0c9c659 in QApplicationPrivate::init() () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#21 0x00005555557f3ce1 in WiresharkApplication::WiresharkApplication(int&, char**) ()
#22 0x00005555556e7574 in main ()
我已经探索过可能的解释，但仍然可能是
- 我有竞争的显卡驱动程序文件或软件包
- 我在某处错误地设置了配置文件
- 另一个已安装/可选库正在影响
amdgpu - 其他内容
我没有安装企业版驱动程序因为它们仅支持 Ubuntu 18.04.2，并且dkms不会使用 Linux 5 内核（甚至是上周发布的驱动程序）进行构建。
我尝试了两种固件级配置：带集成显卡旁路和不带集成显卡旁路。如果禁用旁路（正常模式），则 Intel GPU 和 AMD GPU 均能驱动。如果启用独立显卡旁路，则 Intel GPU 将被旁路，并且仅启用 AMD GPU。虽然我遇到了一系列与切换相关的不同问题，但本页上的问题会影响这两种配置。
在 Windows 10 中一切运行正常，所以我不认为这是一个硬件问题。
答案1
经过多次试验（以及全新安装 Ubuntu 和 Xubuntu），我找到了一种解决方法：完全禁用可切换显卡。在 Precision 7530 固件设置中，我可以关闭可切换显卡并仅使用独立显卡。当我这样做时，与 OpenGL 相关的故障以及 Qt 应用程序崩溃都会消失。
直接离散模式（启用但绕过英特尔芯片）不够好。我不得不完全关闭切换，此时英特尔 VGA 设备不再出现在 Linux 上。
这不完全是一个解决方案，但它是一种变通方法，并且比其他方法更好。
编辑：此配置的耗电量非常糟糕。我的电池寿命只有一半。如果英特尔芯片仍然启用，它仍然可以正常工作，那就太好了。