--- title: Collabora & Linux Kernel 4.15 | daily.dev description: Linux Kernel 4.15 was released with 19 patches contributed by 6 Collabora engineers. Key contributions include V4L2 Explicit Synchronization, UTF-8... canonical: https://daily.dev/posts/collabora-linux-kernel-4-15-qeoo7kywn twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: Collabora & Linux Kernel 4.15 | daily.dev og:description: Linux Kernel 4.15 was released with 19 patches contributed by 6 Collabora engineers. Key contributions include V4L2 Explicit Synchronization, UTF-8... og:url: https://daily.dev/posts/collabora-linux-kernel-4-15-qeoo7kywn og:image: https://api.daily.dev/og/posts/QeoO7kYwN.png og:image:alt: Collabora & Linux Kernel 4.15 og:image:width: 1200 og:image:height: 630 og:locale: en --- > ## Documentation Index > Fetch the complete documentation index at: https://daily.dev/llms.txt > Use this file to discover all available pages before exploring further. # Collabora & Linux Kernel 4.15 **[Collabora Blog](https://daily.dev/sources/collabora)** · 2 min read · 0 upvotes · 0 comments ## Summary Linux Kernel 4.15 was released with 19 patches contributed by 6 Collabora engineers. Key contributions include V4L2 Explicit Synchronization, UTF-8 case-insensitive lookups for EXT4, bisection support for kernelci.org, and DRM async cursor updates via atomic API for freedreno. Gustavo Padovan also became drm-misc co-maintainer. The release was notable for the late-stage merge of KPTI to address the Meltdown vulnerability. Collabora engineers also left 54 Reviewed-by and 28 Signed-off-by tags across the release. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Questions this post answers ### What did Collabora contribute to Linux kernel 4.15? Collabora contributed 19 patches by 6 engineers to Linux 4.15. Key contributions include V4L2 Explicit Synchronization, UTF-8 case-insensitive lookups for EXT4, bisection support for kernelci.org, DRM async cursor updates via atomic API for freedreno, fixes to i.MX serial driver, and a DRM buffer modifier fix for Intel Gemini Lake. Collabora also left 54 Reviewed-by and 28 Signed-off-by tags. _Kernel contributors tracking upstream Linux patch activity follow release cycles like this on daily.dev._ ### Why was Linux kernel 4.15 considered an atypical release? Linux 4.15 was atypical because KPTI, a large memory management patchset, was merged late in the release candidate series to address the Meltdown CPU vulnerability. Merging such a significant security-focused patchset so late in the RC cycle was unusual compared to standard kernel development practice. _Developers keeping up with kernel security patches and release anomalies find coverage like this on daily.dev._ --- Tags: [#linux](https://daily.dev/tags/linux) [View this post on daily.dev](https://daily.dev/posts/collabora-linux-kernel-4-15-qeoo7kywn) ```json {"@context":"https://schema.org","@graph":[{"@type":"Organization","@id":"https://daily.dev/#organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180},"sameAs":["https://twitter.com/dailydotdev","https://github.com/dailydotdev","https://www.linkedin.com/company/daily-dev-ltd"]},{"@type":"WebSite","@id":"https://daily.dev/#website","url":"https://daily.dev","name":"daily.dev","publisher":{"@id":"https://daily.dev/#organization"},"potentialAction":{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https://daily.dev/search?q={search_term_string}"},"query-input":"required name=search_term_string"}}]} {"@context":"https://schema.org","@type":"TechArticle","headline":"Collabora & Linux Kernel 4.15","url":"https://daily.dev/posts/collabora-linux-kernel-4-15-qeoo7kywn","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/collabora-linux-kernel-4-15-qeoo7kywn"},"datePublished":"2026-08-11T08:53:57.722Z","dateModified":"2026-08-11T09:17:43.586Z","description":"Linux Kernel 4.15 was released with 19 patches contributed by 6 Collabora engineers. Key contributions include V4L2 Explicit Synchronization, UTF-8...","image":"https://media.daily.dev/image/upload/s--OHB84bZF--/f_auto/v1722860399/public/Placeholder%2010","thumbnailUrl":"https://media.daily.dev/image/upload/s--OHB84bZF--/f_auto/v1722860399/public/Placeholder%2010","isAccessibleForFree":true,"articleSection":"Collabora Blog","inLanguage":"en","publisher":{"@type":"Organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180}},"author":{"@type":"Organization","name":"Collabora Blog","logo":"https://media.daily.dev/image/upload/s--ZGZ0FjqS--/f_auto,q_auto/v1786438306/logos/collabora?_a=BAMAMicg0","url":"https://daily.dev/sources/collabora"},"commentCount":0,"discussionUrl":"https://daily.dev/posts/collabora-linux-kernel-4-15-qeoo7kywn","interactionStatistic":[{"@type":"InteractionCounter","interactionType":{"@type":"LikeAction"},"userInteractionCount":0},{"@type":"InteractionCounter","interactionType":{"@type":"CommentAction"},"userInteractionCount":0}],"keywords":"linux","timeRequired":"PT2M"} {"@context":"https://schema.org","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https://daily.dev"},{"@type":"ListItem","position":2,"name":"Collabora Blog","item":"https://daily.dev/sources/collabora"},{"@type":"ListItem","position":3,"name":"Collabora & Linux Kernel 4.15"}]} {"@context":"https://schema.org","@type":"FAQPage","@id":"https://daily.dev/posts/collabora-linux-kernel-4-15-qeoo7kywn#faq","mainEntity":[{"@type":"Question","name":"What did Collabora contribute to Linux kernel 4.15?","acceptedAnswer":{"@type":"Answer","text":"Collabora contributed 19 patches by 6 engineers to Linux 4.15. Key contributions include V4L2 Explicit Synchronization, UTF-8 case-insensitive lookups for EXT4, bisection support for kernelci.org, DRM async cursor updates via atomic API for freedreno, fixes to i.MX serial driver, and a DRM buffer modifier fix for Intel Gemini Lake. Collabora also left 54 Reviewed-by and 28 Signed-off-by tags. Kernel contributors tracking upstream Linux patch activity follow release cycles like this on daily.dev."}},{"@type":"Question","name":"Why was Linux kernel 4.15 considered an atypical release?","acceptedAnswer":{"@type":"Answer","text":"Linux 4.15 was atypical because KPTI, a large memory management patchset, was merged late in the release candidate series to address the Meltdown CPU vulnerability. Merging such a significant security-focused patchset so late in the RC cycle was unusual compared to standard kernel development practice. Developers keeping up with kernel security patches and release anomalies find coverage like this on daily.dev."}}]} ```