I'm also experiencing noticeable lag.

elementary OS 7.1 Horus (based on Ubuntu 22.04.3 LTS)
CPU: Intel Core(TM) i7-3635QM CPU @ 2.40GHz 4 cores
Intel HD Graphics 4000
NVIDIA® GeForce® GT® 640M

Not sure if it's related to Intel. When running Zed even on external nvidia gpu it starts lagging on cpu-intensive task (Zed log confirms that it runs on external Nvidia GPU).

Arch Linux
Intel i7-8550U NVIDIA GeForce MX150

I am also noticing a great amount of lag. My specs:

Can confirm that not related to Intel.
Fedora 40 (Gnome / wayland), Intel N200 (4 core, 4 threads), no gpu, works fine

It seems to be a Pop OS issue
I have downloaded zed on a weaker laptop that uses Fedora and it has good performance.

Not having this issue.

I have same snippet in my logs:
2024-07-13T10:17:05 03:00 [INFO] keep_updated;
2024-07-13T10:17:05 03:00 [INFO] Enabling Vulkan Portability
2024-07-13T10:17:05 03:00 [INFO] Enabling color space support
2024-07-13T10:17:05 03:00 [WARN] Rejecting Intel for not presenting when Nvidia is present (on Linux)
2024-07-13T10:17:05 03:00 [INFO] Adapter "llvmpipe (LLVM 15.0.7, 256 bits)"
2024-07-13T10:17:05 03:00 [INFO] No ray tracing extensions are supported

though my laptop does not have nvidia. lspci:
00:00.0 Host bridge: Intel Corporation Device a708 (rev 01)
00:02.0 VGA compatible controller: Intel Corporation Device a7a1 (rev 04)
00:06.0 PCI bridge: Intel Corporation Device a74d (rev 01)
00:07.0 PCI bridge: Intel Corporation Device a76e (rev 01)
00:0a.0 Signal processing controller: Intel Corporation Device a77d (rev 01)
00:0d.0 USB controller: Intel Corporation Device a71e (rev 01)
00:0d.2 USB controller: Intel Corporation Device a73e (rev 01)
00:14.0 USB controller: Intel Corporation Alder Lake PCH USB 3.2 xHCI Host Controller (rev 01)
00:14.2 RAM memory: Intel Corporation Alder Lake PCH Shared SRAM (rev 01)
00:14.3 Network controller: Intel Corporation Device 51f1 (rev 01)
00:15.0 Serial bus controller: Intel Corporation Alder Lake PCH Serial IO I2C Controller #0 (rev 01)
00:15.1 Serial bus controller: Intel Corporation Alder Lake PCH Serial IO I2C Controller #1 (rev 01)
00:1c.0 PCI bridge: Intel Corporation Device 51bd (rev 01)
00:1f.0 ISA bridge: Intel Corporation Device 519d (rev 01)
00:1f.3 Audio device: Intel Corporation Device 51ca (rev 01)
00:1f.4 SMBus: Intel Corporation Alder Lake PCH-P SMBus Host Controller (rev 01)
00:1f.5 Serial bus controller: Intel Corporation Alder Lake-P PCH SPI Controller (rev 01)
01:00.0 Non-Volatile memory controller: Samsung Electronics Co Ltd NVMe SSD Controller SM981/PM981/PM983
2d:00.0 SD Host controller: O2 Micro, Inc. SD/MMC Card Reader Controller (rev 01)

Same issue on my Ubuntu 24, moving up and down the lines even with keyboard feels very laggy. I am using Nvidia 1050ti GPU.

Not sure why this got renamed to be a Pop!_OS issue. I'm running elementary OS and I also experience it, as do other people running other systems

I am having the same problem.

Hardware Model: HP Laptop 15-da0xxx
Processor: Intel Core i3-7020U CPU @ 2.30 GHz x 4
Graphics: Mesa Intel HD Graphics 620 (KBL GT2)
OS: Pop!_OS 22.04 LTS
Windowing System: X11

For me, the editor does not start at all when in iGPU mode:
OS: openSUSE Tumbleweed 20240712 x86_64
Host: 83GS (LOQ 15IAX9)
Kernel: Linux 6.9.7-1-default
CPU: 12th Gen Intel(R) Core(TM) i5-12450HX (12) @ 4.40 GHz
GPU: Intel UHD Graphics @ 1.30 GHz [Integrated]
Windowing System: X11(KDE Plasma 6.1.2)

but it runs well in dGPU mode(RTX 3050 6GB)

manjaro/ intel hd also slow

same issue on Kali / AMD

I experienced the same issue on NixOS. I have a dedicated graphics card.

Hardware Information:

• Hardware Model: ASUSTeK COMPUTER INC. P8Z77-V
• Memory: 16.0 GiB
• Processor: Intel® Core™ i7-3770K × 8
• Graphics: NV136
• Disk Capacity: 3.0 TB

Software Information:

• Firmware Version: 1616
• OS Name: NixOS 24.05 (Uakari)
• OS Build: 24.05.2539.49ee0e94463a
• OS Type: 64-bit
• GNOME Version: 46
• Windowing System: Wayland
• Kernel Version: Linux 6.6.37

Zed starts almost instantly (<1s) for me.

Hardware Information:
Hardware Model: HP Pavilion x360 Convertible 14-cd0xxx
Memory: 7677.0 MiB
CPU: Intel i3-8130U (4) @ 3.400GHz
GPU: Intel UHD Graphics 620

Software Information:
OS Name: Arch Linux x86_64
OS Type: 64-bit
Window Manager: Hyprland
Windowing System: Wayland
Kernel Version: 6.9.9-zen1-1-zen

Edit:
Scrolling and Rendering is fine for me as well.

Zed starts at a good speed compared to others on my device, approx <3s

Specs:
RAM: 8gb
CPU : Intel Xeon processor (of 2017 or 2018) with integrated GPU
Os: Arch linux with Kde plasma 6(with latest version of plasma), Wayland

Edit:
Scrolling and rendering stuffs also works fine but Sometimes some text rendered half either cut from top or bottom

i dont think this is about startup speed, its about rendering and latency. In my case scrolling file make zed process to consume 0 percent of the cpu(an entire core) and typing is not smooth

I have tried manually accelerating zed but still getting lag.

My machine specs.

OS: Pop!_OS 22.04 LST x86_6
Gnome 42.9
GPU: Interl UHD Graphics 620
Memomry: 16gb
CPU: Intel i7-8650U (8) @ 4

I think i found the solution at least for me. As i mentioned before in my zed logs i found below lines:

2024-07-13T10:17:05 03:00 [WARN] Rejecting Intel for not presenting when Nvidia is present (on Linux)
2024-07-13T10:17:05 03:00 [INFO] Adapter "llvmpipe (LLVM 15.0.7, 256 bits)"

My laptop,system76 lemur pro, does not have any nvidia and i searched source code and found that zed is using blade library. https://github.com/kvark/blade/blob/473b71b20d492f753e1f6a938c0e60ac755762b0/blade-graphics/src/vulkan/init.rs#L128 line is printing above warning. That warning is behind an if condition https://github.com/kvark/blade/blob/473b71b20d492f753e1f6a938c0e60ac755762b0/blade-graphics/src/vulkan/init.rs#L116 and in some part it is checking for file called "/etc/prime-discrete" with a content "on" https://github.com/kvark/blade/blob/473b71b20d492f753e1f6a938c0e60ac755762b0/blade-graphics/src/vulkan/init.rs#L50

I edit the file /etc/prime-discrete and change the on string to off(actually any content other than on can work). Now in my zed logs i can see below line and cpu usage is about 2-3% :) which is nice

2024-07-15T22:30:36 03:00 [INFO] Adapter "Intel(R) Graphics (RPL-U)"

In the mean time you should be careful if you have nvidia prime because /etc/prime-discrete file should be related to that tech .

I think i found the solution at least for me. As i mentioned before in my zed logs i found below lines:

2024-07-13T10:17:05 03:00 [WARN] Rejecting Intel for not presenting when Nvidia is present (on Linux) 2024-07-13T10:17:05 03:00 [INFO] Adapter "llvmpipe (LLVM 15.0.7, 256 bits)"

My laptop,system76 lemur pro, does not have any nvidia and i searched source code and found that zed is using blade library. https://github.com/kvark/blade/blob/473b71b20d492f753e1f6a938c0e60ac755762b0/blade-graphics/src/vulkan/init.rs#L128 line is printing above warning. That warning is behind an if condition https://github.com/kvark/blade/blob/473b71b20d492f753e1f6a938c0e60ac755762b0/blade-graphics/src/vulkan/init.rs#L116 and in some part it is checking for file called "/etc/prime-discrete" with a content "on" https://github.com/kvark/blade/blob/473b71b20d492f753e1f6a938c0e60ac755762b0/blade-graphics/src/vulkan/init.rs#L50

I edit the file /etc/prime-discrete and change the on string to off(actually any content other than on can work). Now in my zed logs i can see below line and cpu usage is about 2-3% :) which is nice

2024-07-15T22:30:36 03:00 [INFO] Adapter "Intel(R) Graphics (RPL-U)"

In the mean time you should be careful if you have nvidia prime because /etc/prime-discrete file should be related to that tech .

This actually works.

Quite a wide range of iGPU here. I see one that is 7 years old, and one that is 12 years old. That may have an impact on performance due to drivers if they even have vulkan drivers.

But you can see above that some are having LLVM pipe forced (CPU rendering) which will be even slower on old hardware.

Lastly if /etc/prime-discrete is "on", then it is expected that the user has set this so that their X11 desktop uses dGPU not iGPU. However I think here is where you might begin hitting issues - if you have this set (with the assumption that the related Xorg configs are also forced to dGPU) but are running a Wayland desktop it is (the xorg conf) completely ignored by pretty much every vulkan app around.

TLDR: if both iGPU and dGPU drivers fail then vulkan tries to use the last resort which is llvmpipe for cpu rendering and this is very slow.

I think i found the solution at least for me. As i mentioned before in my zed logs i found below lines:

2024-07-13T10:17:05 03:00 [WARN] Rejecting Intel for not presenting when Nvidia is present (on Linux) 2024-07-13T10:17:05 03:00 [INFO] Adapter "llvmpipe (LLVM 15.0.7, 256 bits)"

My laptop,system76 lemur pro, does not have any nvidia and i searched source code and found that zed is using blade library. https://github.com/kvark/blade/blob/473b71b20d492f753e1f6a938c0e60ac755762b0/blade-graphics/src/vulkan/init.rs#L128 line is printing above warning. That warning is behind an if condition https://github.com/kvark/blade/blob/473b71b20d492f753e1f6a938c0e60ac755762b0/blade-graphics/src/vulkan/init.rs#L116 and in some part it is checking for file called "/etc/prime-discrete" with a content "on" https://github.com/kvark/blade/blob/473b71b20d492f753e1f6a938c0e60ac755762b0/blade-graphics/src/vulkan/init.rs#L50

I edit the file /etc/prime-discrete and change the on string to off(actually any content other than on can work). Now in my zed logs i can see below line and cpu usage is about 2-3% :) which is nice

2024-07-15T22:30:36 03:00 [INFO] Adapter "Intel(R) Graphics (RPL-U)"

In the mean time you should be careful if you have nvidia prime because /etc/prime-discrete file should be related to that tech .

This worked for me too.

I think i found the solution at least for me. As i mentioned before in my zed logs i found below lines:

2024-07-13T10:17:05 03:00 [WARN] Rejecting Intel for not presenting when Nvidia is present (on Linux) 2024-07-13T10:17:05 03:00 [INFO] Adapter "llvmpipe (LLVM 15.0.7, 256 bits)"

My laptop,system76 lemur pro, does not have any nvidia and i searched source code and found that zed is using blade library. https://github.com/kvark/blade/blob/473b71b20d492f753e1f6a938c0e60ac755762b0/blade-graphics/src/vulkan/init.rs#L128 line is printing above warning. That warning is behind an if condition https://github.com/kvark/blade/blob/473b71b20d492f753e1f6a938c0e60ac755762b0/blade-graphics/src/vulkan/init.rs#L116 and in some part it is checking for file called "/etc/prime-discrete" with a content "on" https://github.com/kvark/blade/blob/473b71b20d492f753e1f6a938c0e60ac755762b0/blade-graphics/src/vulkan/init.rs#L50

I edit the file /etc/prime-discrete and change the on string to off(actually any content other than on can work). Now in my zed logs i can see below line and cpu usage is about 2-3% :) which is nice

2024-07-15T22:30:36 03:00 [INFO] Adapter "Intel(R) Graphics (RPL-U)"

In the mean time you should be careful if you have nvidia prime because /etc/prime-discrete file should be related to that tech .

please help me on AMD gpu s
i'm using AMD Radeon 7400 HD

I think i found the solution at least for me. As i mentioned before in my zed logs i found below lines:

2024-07-13T10:17:05 03:00 [WARN] Rejecting Intel for not presenting when Nvidia is present (on Linux) 2024-07-13T10:17:05 03:00 [INFO] Adapter "llvmpipe (LLVM 15.0.7, 256 bits)"

My laptop,system76 lemur pro, does not have any nvidia and i searched source code and found that zed is using blade library. https://github.com/kvark/blade/blob/473b71b20d492f753e1f6a938c0e60ac755762b0/blade-graphics/src/vulkan/init.rs#L128 line is printing above warning. That warning is behind an if condition https://github.com/kvark/blade/blob/473b71b20d492f753e1f6a938c0e60ac755762b0/blade-graphics/src/vulkan/init.rs#L116 and in some part it is checking for file called "/etc/prime-discrete" with a content "on" https://github.com/kvark/blade/blob/473b71b20d492f753e1f6a938c0e60ac755762b0/blade-graphics/src/vulkan/init.rs#L50

I edit the file /etc/prime-discrete and change the on string to off(actually any content other than on can work). Now in my zed logs i can see below line and cpu usage is about 2-3% :) which is nice

2024-07-15T22:30:36 03:00 [INFO] Adapter "Intel(R) Graphics (RPL-U)"

In the mean time you should be careful if you have nvidia prime because /etc/prime-discrete file should be related to that tech .

This worked for me as well using pop_os! on one of system76's meerkat 8's!! I had 100% cpu usage and temps were skyrocketing. I didn't have the same problem on the amd framework13 with pop os.

For me, the editor does not start at all when in iGPU mode: OS: openSUSE Tumbleweed 20240712 x86_64 Host: 83GS (LOQ 15IAX9) Kernel: Linux 6.9.7-1-default CPU: 12th Gen Intel(R) Core(TM) i5-12450HX (12) @ 4.40 GHz GPU: Intel UHD Graphics @ 1.30 GHz [Integrated] Windowing System: X11(KDE Plasma 6.1.2)

but it runs well in dGPU mode(RTX 3050 6GB)

The issue was resolved upon updating the vulkan drivers for my system and reinstalling the intel-specific vulkan drivers
Steps followed:

$ sudo zypper rm libvulkan_intel
$ sudo zypper in libvulkan_intel
$ sudo reboot

Now, the lag is almost unnoticeable, although performance is not as good as using the dGPU

Hey! If you are using latest kernel latest intel/amd driver and it still slow, you should create a ticket here https://gitlab.freedesktop.org/mesa/mesa/-/issues it's project which responsible for your drivers.
I believe even for hasvk possible improve to perfect Zed work.