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Martin Hope
SurvivalMachine
Asked: 2018-10-13 23:59:10 +0800 CST
  • 2

I want to modify Mesa's source code and build it with debugging symbols enabled. I downloaded and built the sources with these commands:

sudo apt build-dep libgl1-mesa-dev
apt source libgl1-mesa-dev
export CFLAGS='-O0 -ggdb3'
export CXXFLAGS='-O0 -ggdb3'
dpkg-buildpackage -rfakeroot -uc -b
sudo dpkg -i *.deb

My modifications are now enabled, but there are no debug symbols. According to Mesa's website, I shold enable debug symbols by setting -g flag in Make-config file, but there is no such file.

Assuming it fixes my issue, where do I put the -g flag before compiling Mesa?

compiling apt gcc mesa
Martin Hope
SurvivalMachine
Asked: 2018-05-01 22:31:22 +0800 CST
  • 13

I installed Ubuntu 18.04 64-bit and enabled DRM in Firefox. When trying to watch Netflix, I get the following errors:

Oops, something went wrong...

Netflix video player unavailable

We're having trouble playing Netflix in your browser. Please make sure you're on an official version of Firefox.

Error Code: F7355-1204

I'm using the version of Firefox that came installed with Ubuntu. How do I play Netflix videos on 18.04?

firefox netflix 18.04
Martin Hope
SurvivalMachine
Asked: 2018-01-12 10:22:39 +0800 CST
  • 1

After some apt upgrades my Wayland session seems broken, the mouse moves but I can't click on anything. I want to try if X.Org works, but as the UI is broken, I must change the session type in the text console.

How do I configure X.Org to start instead of Wayland when the desktop UI is unusable, in the text console?

I got a workaround by using the keyboard: type win, log out and change focus with TAB. From there I could switch to X.Org using keyboard.

xorg
Martin Hope
SurvivalMachine
Asked: 2017-10-22 03:53:13 +0800 CST
  • 2

Every Vulkan application, including LunarG SDK 1.0.61.1 demos, crash on swapchain creation in Ubuntu 17.10 (Wayland and X.org). Callstack from cube demo:

#0  0x00007ffff629f924 in ?? () from /usr/lib/x86_64-linux-gnu/libvulkan_radeon.so
#1  0x00007ffff62ac695 in ?? () from /usr/lib/x86_64-linux-gnu/libvulkan_radeon.so
#2  0x00007ffff629fceb in ?? () from /usr/lib/x86_64-linux-gnu/libvulkan_radeon.so
#3  0x00007ffff798c1ea in terminator_CreateSwapchainKHR () from /home/glaze/Downloads/VulkanSDK/1.0.61.1/x86_64/lib/libvulkan.so.1
#4  0x000055555555a48b in demo_prepare_buffers ()
#5  0x000055555555d51b in demo_prepare ()
#6  0x0000555555560fa0 in main ()

My GPU is AMD R9 Nano. vulkaninfo doesn't give errors and finds the validation layers and instance and device extensions:

Instance Extensions     count = 9
        VK_KHR_surface                      : extension revision 25
        VK_KHR_xcb_surface                  : extension revision  6
        VK_KHR_xlib_surface                 : extension revision  6
        VK_KHR_wayland_surface              : extension revision  6
        VK_KHR_get_physical_device_properties2: extension revision  1
        VK_KHR_external_memory_capabilities : extension revision  1
        VK_KHR_external_semaphore_capabilities: extension revision  1
        VK_KHR_get_surface_capabilities2    : extension revision  1
        VK_EXT_debug_report                 : extension revision  8

Device Extensions       count = 16
    VK_KHR_descriptor_update_template   : extension revision  1
    VK_KHR_incremental_present          : extension revision  1
    VK_KHR_maintenance1                 : extension revision  1
    VK_KHR_push_descriptor              : extension revision  1
    VK_KHR_sampler_mirror_clamp_to_edge : extension revision  1
    VK_KHR_swapchain                    : extension revision 68
    VK_AMD_draw_indirect_count          : extension revision  1
    VK_KHR_shader_draw_parameters       : extension revision  1
    VK_KHR_get_memory_requirements2     : extension revision  1
    VK_KHR_dedicated_allocation         : extension revision  1
    VK_KHR_external_memory              : extension revision  1
    VK_KHR_external_memory_fd           : extension revision  1
    VK_KHR_storage_buffer_storage_class : extension revision  1
    VK_KHR_variable_pointers            : extension revision  1
    VK_KHR_external_semaphore           : extension revision  1
    VK_KHR_external_semaphore_fd        : extension revision  1

Here's my environment variables:

export VULKAN_SDK=~/Downloads/VulkanSDK/1.0.61.1/x86_64
export PATH=$VULKAN_SDK/bin:$PATH
export LD_LIBRARY_PATH=$VULKAN_SDK/lib:$LD_LIBRARY_PATH
export VK_LAYER_PATH=$VULKAN_SDK/etc/explicit_layer.d

Are my Vulkan libraries configured wrongly or does this look like a RADV bug?

edit (2017-11-08): According to Phoronix this could be caused by Ubuntu's Mir patches:

If you have been trying to use the RADV Radeon Vulkan driver that's packaged for Ubuntu but find it not working, chances are it's caused by Canonical's patches for Mir support.

I haven't been able to try the workaround (installing drivers from a PPA: sudo apt-add-repository ppa:paulo-miguel-dias/mesa && sudo apt update && sudo apt dist-upgrade) but will update this question or post an answer after I do unless someone else could verify that it works.

amd-graphics