↩️ 我最近高强度盯着川普 2.0 时期对中国籍学签工签、包括旅游签的潜在新入境人群,以及 base 国内的云玩卡群友的影响,对群友们最熟悉的宏观经济方面的输出相...

我最近高强度盯着川普 2.0 时期对中国籍学签工签、包括旅游签的潜在新入境人群,以及 base 国内的云玩卡群友的影响,对群友们最熟悉的宏观经济方面的输出相对少很多,还请各位海涵😋

高中时我也想不到今天的我居然被迫在做一系列数码/金融/中美合规三手抓的事情,我尽量做我能做的,如果有疏漏和失误可以随时细聊,能改的都会改,只要是不依赖巨额资金余额为前提的东西,我迟早都可以了解到,就先这样😶‍🌫️

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Cursor IDE support hallucinates lockout policy, causes user cancellations

Earlier today Cursor, the magical AI-powered IDE started kicking users off when they logged in from multiple machines.

Like,you’d be working on your desktop, switch to your laptop, and all of a sudden you're forcibly logged out. No warning, no notification, just gone.

Naturally, people thought this was a new policy.

So they asked support.

And here’s where it gets batshit: Cursor has a support email, so users emailed them to find out. The support peson told everyone this was “expected behavior” under their new login policy.

One problem. There was no support team, it was an AI designed to 'mimic human responses'

That answer, totally made up by the bot, spread like wildfire.

Users assumed it was real (because why wouldn’t they? It's their own support system lol), and within hours the community was in revolt. Dozens of users publicly canceled their subscriptions, myself included. Multi-device workflows are table stakes for devs, and if you're going to pull something that disruptive, you'd at least expect a changelog entry or smth.

Nope.

And just as people started comparing notes and figuring out that the story didn’t quite add up… the main Reddit thread got locked. Then deleted. Like, no public resolution, no real response, just silence.

To be clear: this wasn’t an actual policy change, just a backend session bug, and a hallucinated excuse from a support bot that somehow did more damage than the bug itself.

But at that point, it didn’t matter. People were already gone.

Honestly one of the most surreal product screwups I’ve seen in a while. Not because they made a mistake, but because the AI support system invented a lie, and nobody caught it until the userbase imploded.


Comments URL: https://news.ycombinator.com/item?id=43683012

Points: 915

# Comments: 337

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Intel Lunar Lake On Linux Can Roughly Match Windows 11 Xe2 Graphics - When Not Stuck At 400MHz

Earlier this month I looked at the AMD RDNA 3.5 graphics with Strix Point between Windows 11 and Ubuntu 25.04 Linux. The testing showed the AMD RDNA 3.5 graphics on the open-source Linux driver up to around 96% the performance of Radeon Software on Windows. The most frequent question that came up from that most recent round of benchmarking was wondering how the Intel Xe2 graphics on Core Ultra Series 2 "Lunar Lake" now compares between Windows 11 and Linux given that both drivers have been maturing the past several months. Here's the story of the Xe2 graphics between Windows 11 and Ubuntu 25.04 while using a Lenovo ThinkPad X1 Carbon Gen 13 Aura Edition laptop.

Lenovo ThinkPad X1 Carbon Gen 13 Aura Edition running Ubuntu Linux

There was a lot of interest in seeing fresh Intel Windows vs. Linux iGPU benchmarks with the inquiries raised from that recent AMD Strix Point testing using the Ryzen AI 7 PRO 360 on the Lenovo ThinkPad T14s Gen 6. I got my hands on a Lenovo ThinkPad X1 Carbon Gen 13 Aura Edition to carry out similar Lunar Lake tests. Today's article is just looking at the Windows 11 vs. Ubuntu 25.04 graphics performance in some cross-platform/native tests while benchmarking other Linux workloads from the X1 Carbon Gen 13 Aura Edition will be in various follow-up articles.

Lenovo ThinkPad X1 Carbon Gen 13 with Windows 11

Last year when Lunar Lake first launched, the Linux graphics driver state left a lot to be desired. But with time the Lunar Lake Linux support has improved a lot and have ran numerous follow-up benchmarks using a Core Ultra 7 256V within the ASUS Zenbook S14. Once things started maturing, the Xe2 Lunar Lake graphics on Linux have been running nice and reaffirmed by the results about to be shown in this article.

Lenovo ThinkPad X1 Carbon Gen 13 Aura Edition

When initially getting Linux booting on the Lenovo ThinkPad X1 Carbon Gen 13 though, the performance was horrendous across both CPU and graphics work... This was rather surprising given the robust experience I've been having for several months now with the ASUS Zenbook with Lunar Lake. I quickly noticed the Core Ultra 7 258V within the X1 Carbon was running at 400MHz across all cores... Even under demanding workloads!

400MHz X1 Carbon Gen 13 bug

It turns out I'm not alone and after some searching there are others reporting this issue too for the ThinkPad X1 Carbon Gen 13, such as on Reddit with users finding their Lunar Lake SoC getting stuck at 400MHz across all cores. I experienced this both out-of-the-box on Ubuntu 25.04 and Fedora Workstation 42. The easiest solution to workaround this has been switching over to the "performance" ACPI Platform Profile rather than sticking to the "balanced" default. When switching the platform profile, the Core Ultra 7 258V within the ThinkPad X1 Carbon Gen 13 was able to successfully run up to its 4.8GHz maximum turbo frequency rather than being stuck at 400MHz.

400MHz ThinkPad X1 Carbon Gen 13 Aura Edition bug on Ubuntu Linux

When hitting this 400MHz bug, it's extremely clear performance-wise... Even interacting with just the GNOME desktop is painfully slow. Within the graphics benchmarks here is a look at the impact for reference. The "- Balanced" run is in the default balanced platform profile stuck at 400MHz while the other Ubuntu 25.04 run is in the performance profile to properly engage the Core Ultra 7 258V compared to Windows 11 Pro as shipped by Lenovo.

400MHz performance impact

Once working around that 400MHz issue on the ThinkPad X1 Carbon Gen 13 Aura Edition, the Xe2 graphics were delivering a very capable experience atop the latest upstream open-source Intel graphics driver stack and competitive to Windows 11. Both Fedora Workstation 42 and Ubuntu 25.04 as a reminder are on the Linux 6.14 kernel and Mesa 25.0 drivers for providing a very up-to-date experience.

ThinkPad X1 Carbon Gen 13 Aura Edition

Here are benchmarks showing how Ubuntu 25.04 can compete with Windows 11 Pro on the Lenovo ThinkPad X1 Carbon Gen 13 Aura Edition with the Core Ultra 7 255V. The same hardware was used throughout testing. Windows 11 Pro was tested in the Lenovo pre-installed configuration with all available updates as of testing and Ubuntu 25.04 was done from a clean install and just working around the 400MHz bug but otherwise at the defaults. Reported hardware differences (such as the CPU frequency) in the system table just come down to how the information is exposed by the interfaces on each operating system.

Lunar Lake X1 Carbon Gen 13 - Linux vs. Windows Graphics

A variety of OpenGL and Vulkan benchmarks native to both Windows and Linux were run for getting an idea how Lunar Lake Xe2 graphics are competing between Windows and Linux for Q2'2025. More Core Ultra 7 258V / X1 Carbon Gen 13 Linux benchmarks coming up on Phoronix in additional articles. With focusing just on the driver quality and not looking to get into the overhead of Proton/VKD3D/DXVK and other API translation layers, various native graphics benchmarks were used on both operating system.

GravityMark benchmark with settings of Resolution: 2880 x 1800, Renderer: OpenGL. Ubuntu 25.04 was the fastest.
GravityMark benchmark with settings of Resolution: 2880 x 1800, Renderer: Vulkan. Ubuntu 25.04 was the fastest.

To much surprise with the GravityMark graphics benchmark native to both Windows and Linux, the Intel open-source drivers on Linux was delivering much better performance than Windows 11 Pro as shipped by Lenovo (plus the latest software updates) on this ThinkPad X1 Carbon Gen 13. Particularly with OpenGL the Linux performance was much greater but even when comparing the Vulkan renderer performance there was a nice showing out of the Mesa 25.0 Intel ANV open-source driver with the Xe kernel driver from Linux 6.14.

GravityMark benchmark with settings of Resolution: 2880 x 1800, Renderer: Vulkan Ray-Tracing. Windows 11 Pro was the fastest.

Similar to the situation on the AMD side, the big exception to the strong Linux showing was for ray-tracing... The Intel Windows driver was much faster at Vulkan ray-tracing than the current Linux driver stack.

Quake II RTX benchmark with settings of Resolution: 2880 x 1800, Global Illumination: Low, Denoiser: On, RT API: VK_KHR_ray_query. Windows 11 Pro was the fastest.
Quake II RTX benchmark with settings of Resolution: 2880 x 1800, Global Illumination: Off, Denoiser: On, RT API: VK_KHR_ray_query. Ubuntu 25.04 was the fastest.
Quake II RTX benchmark with settings of Resolution: 2880 x 1800, Global Illumination: Low, Denoiser: Off, RT API: VK_KHR_ray_query. Windows 11 Pro was the fastest.
Quake II RTX benchmark with settings of Resolution: 2880 x 1800, Global Illumination: Off, Denoiser: Off, RT API: VK_KHR_ray_query. Ubuntu 25.04 was the fastest.

Running Quake II RTX that is native to each platform showed the Intel ray-tracing performance on Linux in slightly better shape but overall a stronger Windows showing than with rasterized graphics tests. In any case though Quake II RTX at the native 2880 x 1800 resolution for the Lenovo ThinkPad X1 Carbon Gen 13 was not a playable experience.

Unigine Heaven benchmark with settings of Resolution: 2880 x 1800, Mode: Fullscreen, Renderer: OpenGL. Ubuntu 25.04 was the fastest.
Unigine Heaven benchmark with settings of Resolution: 2880 x 1800, Mode: Fullscreen, Renderer: D3D11. Windows 11 Pro was the fastest.

The Unigine Heaven benchmark showed the Windows and Linux performance with OpenGL to be very similar on this Lunar Lake laptop. Interestingly the Intel OpenGL driver on Windows was slightly faster than using Direct3D 11.

Unigine Superposition benchmark with settings of Resolution: 2880 x 1800, Mode: Fullscreen, Quality: Low, Renderer: OpenGL. Ubuntu 25.04 was the fastest.
Unigine Superposition benchmark with settings of Resolution: 2880 x 1800, Mode: Fullscreen, Quality: Low, Renderer: D3D11. Windows 11 Pro was the fastest.
Unigine Superposition benchmark with settings of Resolution: 2880 x 1800, Mode: Fullscreen, Quality: Medium, Renderer: OpenGL. Ubuntu 25.04 was the fastest.
Unigine Valley benchmark with settings of Resolution: 2880 x 1800, Mode: Fullscreen, Renderer: D3D11. Windows 11 Pro was the fastest.

With the newer Unigine Superposition benchmark, Ubuntu 25.04 was delivering slightly better performance than Windows 11 Pro for the Xe2 graphics with the Intel Core Ultra 258V.

Unigine Valley benchmark with settings of Resolution: 2880 x 1800, Mode: Fullscreen, Renderer: OpenGL. Ubuntu 25.04 was the fastest.

Unigine Valley also showed the great strength of the Intel Iris OpenGL open-source driver on Linux from this X1 Carbon Gen 13 laptop.

Xonotic benchmark with settings of Resolution: 2880 x 1800, Effects Quality: Low. Windows 11 Pro was the fastest.
Xonotic benchmark with settings of Resolution: 2880 x 1800, Effects Quality: High. Windows 11 Pro was the fastest.
Xonotic benchmark with settings of Resolution: 2880 x 1800, Effects Quality: Ultra. Windows 11 Pro was the fastest.
Xonotic benchmark with settings of Resolution: 2880 x 1800, Effects Quality: Ultimate. Windows 11 Pro was the fastest.

With the Xonotic OpenGL-renderered cross-platform first person shooter game Windows 11 was performing much faster than Ubuntu 25.04.

FurMark benchmark with settings of Resolution: 2880 x 1800, Demo: FurMark OpenGL, MSAA: Off. Ubuntu 25.04 was the fastest.
FurMark benchmark with settings of Resolution: 2880 x 1800, Demo: FurMark Vulkan, MSAA: Off. Windows 11 Pro was the fastest.
FurMark benchmark with settings of Resolution: 2880 x 1800, Demo: FurMark Knot OpenGL, MSAA: Off. Ubuntu 25.04 was the fastest.
FurMark benchmark with settings of Resolution: 2880 x 1800, Demo: Furmark Knot Vulkan, MSAA: Off. Windows 11 Pro was the fastest.

For those really wanting to stress Xe2 graphics, the Windows/Linux-native FurMark showed roughly similar performance between the competing operating systems.

GpuTest benchmark with settings of Test: GiMark, Resolution: 2880 x 1800, Mode: Fullscreen. Ubuntu 25.04 was the fastest.
GpuTest benchmark with settings of Test: Plot3D, Resolution: 2880 x 1800, Mode: Fullscreen. Ubuntu 25.04 was the fastest.
GpuTest benchmark with settings of Test: Furmark, Resolution: 2880 x 1800, Mode: Fullscreen. Ubuntu 25.04 was the fastest.
GpuTest benchmark with settings of Test: TessMark, Resolution: 2880 x 1800, Mode: Fullscreen. Ubuntu 25.04 was the fastest.
GpuTest benchmark with settings of Test: Triangle, Resolution: 2880 x 1800, Mode: Fullscreen. Ubuntu 25.04 was the fastest.
GpuTest benchmark with settings of Test: Pixmark Piano, Resolution: 2880 x 1800, Mode: Fullscreen. Ubuntu 25.04 was the fastest.
GpuTest benchmark with settings of Test: Pixmark Volplosion, Resolution: 2880 x 1800, Mode: Fullscreen. Ubuntu 25.04 was the fastest.

For a mix of other native graphics work, Ubuntu 25.04 struck up several wins with GpuTest.

vkpeak benchmark with settings of fp32-scalar. Windows 11 Pro was the fastest.
vkpeak benchmark with settings of fp32-vec4. Ubuntu 25.04 was the fastest.
vkpeak benchmark with settings of fp64-scalar. Windows 11 Pro was the fastest.
vkpeak benchmark with settings of fp64-vec4. Ubuntu 25.04 was the fastest.
vkpeak benchmark with settings of int16-vec4. Ubuntu 25.04 was the fastest.

With vkpeak to look at the Vulkan compute capabilities, Windows 11 Pro and Ubuntu 25.04 were in a competitive, healthy race. It was a mix of wins and much better than back at the Core Ultra Series 2 launch when the Linux performance was much worse than it is now -- well, as long as not hitting that 400MHz bug.

VkFFT benchmark with settings of Test: FFT + iFFT C2C multidimensional in single precision. Windows 11 Pro was the fastest.
VkFFT benchmark with settings of Test: FFT + iFFT C2C Bluestein benchmark in double precision. Windows 11 Pro was the fastest.
VkFFT benchmark with settings of Test: FFT + iFFT C2C 1D batched in single precision, no reshuffling. Ubuntu 25.04 was the fastest.

The VkFFT benchmarks also showed the Vulkan compute capabilities largely competitive between Windows 11 and Linux.

Geometric Mean Of All Test Results benchmark with settings of Result Composite, Lunar Lake X1 Carbon Gen 13, Linux vs. Windows Graphics. Windows 11 Pro was the fastest.

From this brief round of Windows 11 vs. Ubuntu 25.04 graphics testing on Lunar Lake with the Lenovo ThinkPad X1 Carbon Gen 13 Aura Edition, on a geo mean basis it came out close overall. Windows had stronger advantages in areas like Vulkan ray-tracing but overall the Intel open-source driver support for Xe2 / Lunar Lake has matured a lot the past several months. Intel Lunar Lake on Linux is much more capable now than at launch and overall in good shape -- barring the glaring issue with this particular laptop of getting stuck to 400MHz out-of-the-box... Hopefully a proper resolution to that 400MHz CPU core issue will come soon but for now can be worked around by manipulating the platform profile. Meanwhile with like the ASUS Zenbook S14 with Core Ultra 7 256V for example it's been trouble-free under Linux for a while.

Stay tuned for more Linux benchmarks of the Lenovo ThinkPad X1 Carbon Gen 13 on Phoronix.

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